1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.43:
3 * enhancement: RUN-PROGRAM accepts :EXTERNAL-FORMAT argument to select the
4 external-format for its :INPUT, :OUTPUT, AND :ERROR :STREAMs.
5 * bug fix: compiler failed to derive the result-type of MAKE-ARRAY as
6 (AND VECTOR (NOT SIMPLE-ARRAY)) when appropriate. (lp#309130)
7 * bug fix: (THE (VALUES ...)) in LOAD-TIME-VALUE caused a compiler-error.
9 * bug fix: interrupts arriving due to CL:OPEN caused an error.
10 * bug fix: overeager character buffering could cause input to block
11 spuriously when reading from a pipe (lp#643686)
13 changes in sbcl-1.0.43 relative to sbcl-1.0.42:
14 * incompatible change: FD-STREAMS no longer participate in the serve-event
15 event-loop by default. (lp#316072)
16 ** In addition to streams created by explicit calls to MAKE-FD-STREAM this
17 affects streams from CL:OPEN.
18 ** Streams from SOCKET-MAKE-STREAM still participate in serve-event by
19 default, but this is liable to change: applications needing serve-event
20 for socket streams should explicitly request it using :SERVE-EVENTS T
22 * enhancement: SB-EXT:WORD type is provided for use with SB-EXT:ATOMIC-INCF
24 * enhancement: CLOS effective method functions and defclass slot typechecking
25 function now have debug names for use in backtraces and profiles.
26 * enhancement: ASDF has been updated to version 2.004. (lp#605260, thanks to
28 * enhancement: symbols are printed using fully qualified names in several
29 error and warning messages which are often associated with package
30 conflicts or mixups (lp#622789, thanks to Attila Lendvai)
31 * bug fix: SB-BSD-SOCKETS:SOCKET-CONNECT was not thread safe. (lp#505497,
32 thanks to Andrew Golding)
33 * bug fix: reading /proc files on Linux works. (lp#425199)
34 * bug fix: DOTIMES accepted literal non-integer reals. (lp#619393, thanks to
36 * bug fix: WRITE-TO-STRING compiler macro binding special variable names,
37 breaking code that tried to write the value of a printer control variable.
38 (lp#581564, thanks to Stas Boukarev)
39 * bug fix: WRITE compiler macro did not handle output stream designators
40 correctly. (lp#598374, thanks to Stas Boukarev)
41 * bug fix: better availability of names of foreign functions in backtraces
42 on Linux. (lp#626962, thanks to Stas Boukarev)
43 * bug fix: scripting and build for Solaris and FreeBSD. (lp#615497,
44 lp#627581, thanks to Josh Elsasser and Jim Wise)
45 * bug fix: build fixes for OpenBSD -current and 4.8 (lp#615489, lp#615492,
46 thanks to Josh Elsasser)
47 * bug fix: using aliases for builtin classes as defmethod specializers
48 without adding DEFTYPEs for them works. (lp#618387)
49 * bug fix: timetravel by getrusage() no longer causes type-errors during GC.
51 * bug fix: legally dynamic-extent lists and vectors used as
52 initialization arguments to MAKE-ARRAY can be stack allocated. (lp#586105)
53 * bug fix: inline-expansion creating references to dead lambda-variables
54 (lp#454681, thanks to Alexey Dejneka)
55 * bug fix: better error message for bogus numerical arguments to RANDOM.
56 (lp#598986, thanks to Stas Boukarev)
57 * bug fix: the compiler occasionally inlined references from incompatible
58 environments occurs. (lp#308951)
59 * bug fix: the compiler threw an error when trying to compile a local
60 function (labels or flet) known to take a specialized complex argument.
61 (not in launchpad, reported by sykopomp in #lispgames)
62 * bug fix: package-locks failed to protect against compile-time effects of
63 DEFUN when the symbol previously had a macro definition. (lp#576637)
64 * bug fix: spurious ignore warnings even given (DECLARE IGNORE) in methods
65 when parameter bindings mutated. (reported by Faré Rideau; lp #611361)
66 * bug fix: workaround for compiler hang in ORDER-UVL-SETS (lp#308914)
67 * bug fix: evaluation in debugger REPL works using the global context when
68 in frames that do not have sufficient debug information.
69 * bug fix: exceeding FD_SETSIZE limit now results in an sensible error
71 * bug fix: (SETF DOCUMENTATION) of a macro works properly. (lp#643958, thanks
73 * bug fix: interrupt taking longer than the requested period caused SLEEP
74 to hang on Darwin. (lp#640516, thanks to Joe Lebroco for the analysis)
76 changes in sbcl-1.0.42 relative to sbcl-1.0.41
78 ** Cross-compilation host is now specified to make.sh using
79 command-line argument --xc-host=<command> instead of a positional
80 argument. (thanks to Daniel Herring)
81 ** Install location can be specified to make.sh using command-line
82 argument --prefix=<path>. (lp#550889s, thanks to Daniel Herring)
83 * optimization: The default implementation of
84 COMPUTE-DISCRIMINATING-FUNCTION does much less wasted work.
85 * enhancement: Explicit memory barrier operations are now available for use
86 by multithreaded code. See documentation for details.
87 * enhancement: Experimental support for threading on Linux/PPC.
88 * bug fix: RENAME-PACKAGE returns the package. (Thanks to Eric Marsden)
89 * bug fix: EXPT signals an error if first argument is a zero and second
90 argument is a floating point zero. (lp#571581, thanks to Roman Marynchak)
91 * bug fix: DEFTYPE signals an error for non-list lambda-lists.
92 (lp#576594, thanks to Roman Marynchak)
93 * bug fix: make ASDF-INSTALL compatible with the now-included ASDF2.
94 (lp#612998, reported by Phil Hargett; patch from Jim Wise)
96 changes in sbcl-1.0.41 relative to sbcl-1.0.40:
97 * optimization: validity of observed keyword initargs to MAKE-INSTANCE is
98 cached, leading to many fewer expensive calls to
99 COMPUTE-APPLICABLE-METHODS.
100 * optimization: in the (unoptimized) general method for MAKE-INSTANCE on a
101 CLASS argument, search for and call an appropriate optimized ctor function
103 * bug fix: WRITE always returns the correct value.
105 changes in sbcl-1.0.40 relative to sbcl-1.0.39:
106 * bug fix: readdir now works on :inode64 darwin builds (lp#592897)
107 * bug fix: Name conflicts between symbols passed as arguments to a single
108 call to IMPORT no longer add multiple symbols with the same name to the
109 package (detectable via DO-SYMBOLS).
110 * bug fix: support building without the dlshim on darwin x86 and x86-64
112 * bug fix: TRACE :ENCAPSULATE NIL now works on ppc/linux.
114 changes in sbcl-1.0.39 relative to sbcl-1.0.38:
115 * bug fix: Backtrace from undefined function on x86 and x86-64 now show
117 * bug fix: linkage-table entries on PPC now no longer overflow their
118 space allocation (potentially causing crashes if they are written out
120 * bug fix: Scrub control stack after scavenging in gencgc on non-x86oid
121 platforms, preventing the GC from seeing stale pointers on the control
122 stack in subsequent GCs (which would, and does, break invariants).
123 * bug fix: 32-bit unicode external formats now work on big-endian systems.
124 * bug fix: Literal characters with code points greater than about 32767
125 now work on PPC UNICODE builds.
126 * bug fix: Any noise left by SSE operations (sqrt and conversions) in the
127 high order bits are explicitly cleared out. In some contrived situations,
128 this could lead to wrong results in mixed real/complex float arithmetic.
129 * bug fix: Fix function/macro redefinition warnings when building with
130 clisp. (lp#576787, thanks to Josh Elsasser)
131 * new platform: experimental support for ppc/openbsd (thanks to Josh
133 * bug fix: Floating-point traps now work on ppc/linux.
135 changes in sbcl-1.0.38 relative to sbcl-1.0.37:
136 * incompatible change: Thread names are now restricted to SIMPLE-STRINGs
137 like for any other thread-related datastructure, MUTEX, etc. (lp#547095)
138 * deprecation: the SB-QUEUE contrib was merged into the SB-CONCURRENCY
139 contrib module. New code should depend on SB-CONCURRENCY, not SB-QUEUE.
140 * deprecation: SB-THEAD:GET-MUTEX was deprecated in favor of
141 SB-THREAD:GRAB-MUTEX.
142 * new contributed module: SB-CONCURRENCY is a new contrib; it's supposed to
143 contain additional data structures and tools for concurrent programming;
144 at the moment it contains a lock-free queue, and a lock-free mailbox
146 * new feature: added SB-THREAD:GRAB-MUTEX; it's like the now deprecated
147 GET-MUTEX but takes &key rather than &optional parameters. Also added
148 :TIMEOUT argument to GRAB-MUTEX on non-sb-lutex platforms like Linux and
150 * new feature: added SB-THREAD:TRY-SEMAPHORE, a non-blocking variant of
151 SB-THREAD:WAIT-ON-SEMAPHORE.
152 * new feature: SB-EXT:ATOMIC-DECF has been added as a companion to
154 * new feature: a CANCEL-DEADLINE is associated with DEADLINE-TIMEOUT
155 conditions to defer the deadline for forever.
156 * enhancement: *STANDARD-OUTPUT*, *STANDARD-INPUT*, and *ERROR-OUTPUT* are
158 * enhancement: errors from NO-APPLICABLE-METHOD and
159 NO-PRIMARY-METHOD now have a RETRY restart available to retry the
160 generic function call.
161 * enhancement: SB-BSD-SOCKET improvements
162 ** sockets and socket streams now have a more informative printed
163 representation based on the corresponding SOCKET-NAME and
165 ** SOCKET-MAKE-STREAM once more supports the :AUTO-CLOSE option.
167 ** SOCKET-CLOSE now accepts :ABORT argument, which is passed on to
168 CL:CLOSE when appropriate, and no longer disassociates the stream
169 from the socket if close failed. (lp#543951)
170 * improvements to the instrumenting profiler
171 ** new feature: report per-function GC overhead. (thanks to John Fremlin)
172 ** optimization: counters no longer use locks for the overflow mode.
173 ** bug fix: whenever a profiling counter wrapped into overflow mode, it
174 incurred an off-by-one miscount.
175 * enhancement: improved MAKE-HASH-TABLE documentation (lp#543473)
176 * enhancement: improved DEFMETHOD pretty-printing.
177 * enhancement: perform range reduction when arguments are too large for
178 x87's transcendentals (instead of returning 0). (lp#327192)
179 * enhancement: eliminate some spurious TYPE-WARNINGs. Should help with
180 some of CL-PPCRE's macros. (lp#570079)
181 * enhancement: our machine code is slightly less hostile to valgrind on
183 * enhancement: up-to-date versions of NetBSD-current are supported. (Thanks
184 to Robert Swindells and Aleksej Saushev)
185 * bug fix: correct restart text for the continuable error in MAKE-PACKAGE.
186 * bug fix: a rare case of startup-time page table corruption.
187 * bug fix: a semaphore with multiple waiters and some of them unwinding due
188 to timeouts could be left in an inconsistent state.
189 * bug fix: fix typo in "Reporting Bugs" section of the manual (lp#520366)
190 * bug fix: misoptimization of multiplication by one in
191 (SB-C::FLOAT-ACCURACY 0) policies.
192 * bug fix: miscounts in SB-PROFILE.
193 * bug fix: Fix lost wakeup bug between SB-THREAD:CONDITION-WAIT and
194 CONDITION-NOTIFY on Linux. See threads "lost wakeup in condition-wait /
195 condition-notify" (Feb 2010) and "Condition-Wait, Deadline handler, waking
196 up itself" (March 2010) for further details.
197 * bug fix: allow forward FIND and POSITION on lists to elide checking :END
198 against length of the list if the element is found before the specified
199 END is reached. (thanks to Alec Berryman, lp#554385)
200 * bug fix: errors signalled during package graph modification no longer
201 block FIND-SYMBOL and FIND-PACKAGE in other threads. (lp#511072)
202 * bug fix: SB-POSIX build was broken when SBCL was compiled without the
203 :SB-DOC feature. (lp#552564)
204 * bug fix: SB-INTROSPECT build issues on GENGC/PPC. (lp#490490)
205 * bug fix: more robust runtime executable path detection. (lp#375549)
206 * bug fix: GCD always returns positive values. (lp#413680)
207 * bug fix: Converting division to multiplication by reciprocal handles
209 * bug fix: We were too eager in eliding range reduction tests on x87.
210 The maximal magnitude is 2^63, not 2^64.
211 * bug fix: Transforms for TRUNCATE don't die when the result is completely
213 * bug fix: Maybe restore buildability on Alpha.
214 * bug fix: READ-BYTE isn't inline anymore, fixing weird streams failures.
216 * bug fix: RANDOM-STATE can be printed readably again.
217 * bug fix: Unreadable objects were sometimes printed like #<\nFoo>.
218 * bug fix: Using EQL with non-constant values of constant type (e.g. EQL
219 types) could result in type mismatches during compilation.
221 changes in sbcl-1.0.37 relative to sbcl-1.0.36:
222 * enhancement: Backtrace from THROW to uncaught tag on x86oids now shows
223 stack frame thrown from.
224 * enhancement: WITH-COMPILATION-UNIT :POLICY allows restricting changes to
225 compiler optimization qualities inside dynamic extent of its body.
226 * enhancement: LOAD-LOGICAL-PATHNAME-TRANSLATIONS can be used to load
227 translations from SYS:SITE;<HOST>.TRANSLATIONS.NEWEST (thanks to Michael
229 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) take advantage of
230 constraint propgation, allowing better compilation eg. when used to
231 access structures with WITH-SLOTS. (lp#520366)
232 * optimization: the compiler is now more aware of the type of the underlying
233 storage vector for multidimensional simple arrays resulting in better code
234 for accessing such arrays.
235 * optimization: passing NIL as the environment argument to TYPEP no longer
236 inhibits optimizing it. (lp#309788)
237 * optimization: more efficient register usage when handling single-float
238 arguments on x86-64. (thanks to Lutz Euler)
239 * optimization: ADJUST-ARRAY and STABLE-SORT on vectors no longer use
240 pre-allocated temporary vectors. (lp#496249)
241 * bug fix: Fix compiler error involving MAKE-ARRAY and IF forms
242 in :INITIAL-CONTENTS. (lp#523612)
243 * bug fix: FUNCTION-LAMBDA-EXPRESSION lost declarations from interpreted
244 functions. (lp#524707)
245 * bug fix: bogus style warnings from certain (SETF SLOT-VALUE) and
246 WITH-SLOTS usages during compilation.
247 * bug fix: SB-C::CLASS-INFO now prints correctly. (lp#514762)
248 * enhancement: Can now build with ud2 instead of int3 as trap instruction on
249 all x86oid platforms with :UD2-BREAKPOINTS target feature.
250 * bug fix: Breakpoints now work when using ud2 instead of int3 as trap
251 instruction (tested on x86oid linux with ud2-breakpoints).
252 * bug fix: slam.sh now works on win32.
253 * bug fix: better differences of numeric types. (lp#309124)
254 * bug fix: arrays declared intersection and union types can have their
255 upgraded element type derived. (lp#316078)
256 * bug fix: SB-SPROF allocation profiling for all threads failed to profile
257 threads started during profiling. (lp#472499)
258 * bug fix: SB-INTROSPECT test failure when building without SB-EVAL feature.
260 * bug fix: SB-CLTL2:DECLARATION-INFORMATION did not take
261 SB-EXT:RESTRICT-COMPILER-POLICY into account. (lp#313337)
262 * bug fix: Comma inside a backquoted array or structure resulted in nonsense
263 values instead of signaling an error. (lp#309093)
264 * bug fix: Spurious unused variable warning in a DEFSTRUCT edge case.
266 * bug fix: More consistent warnings and notes for ignored DYNAMIC-EXTENT
267 declarations (lp#497321)
268 * bug fix: FIND and POSITION on lists did not check sequence bounds properly
269 and failed to detect circular lists (lp#452008)
270 * bug fix: leakage from ~/.asdf-install into the ASDf-INSTALL contrib build
272 * bug fix: LOOP OF-TYPE VECTOR compile-time error. (lp#540186)
273 * bug fix: SIGNAL SB-SYS:INTERACTIVE-INTERRUPT before entering the debugger
274 due to it, so that handlers can run.
275 * bug fix: reparsing undefined types if they have become defined since
277 * bug fix: missing &REST type in a proclamation for a function with both
278 &REST and &KEY in lambda-list caused miscompilation (lp#458354)
279 * bug fix: WHO-CALLS information for source-transformed and compiler-macro
280 expanded calls (lp#542174)
281 * bug fix: more accurate WHO-MACROEXPANDS information; point into rather
282 than just at toplevel form.
284 changes in sbcl-1.0.36 relative to sbcl-1.0.35:
285 * new feature: SB-EXT:TYPEXPAND-1, SB-EXT:TYPEXPAND, and
286 SB-EXT:TYPEXPAND-ALL behave exactly like their MACROEXPAND counterparts
287 but work on type specifiers.
288 * new feature: SB-EXT:DEFINED-TYPE-NAME-P returns whether a symbol is known
289 to name a type specifier.
290 * new feature: SB-EXT:VALID-TYPE-SPECIFIER-P returns whether a given type
291 specifier is valid where "valid" basically means "would be accepted as
292 second argument of TYPEP".
293 * new feature: SB-INTROSPECT:FUNCTION-TYPE takes a function-designator and
294 returns the function's declared, or derived FTYPE.
295 * new feature: SB-POSIX now supports accessing the d_ino member of
296 dirent structures. (Thanks to Philipp Marek and Pierre THEIRRY)
297 * new feature: The function SB-EXT:SEED-RANDOM-STATE has been added to
298 provide for seeding a RANDOM-STATE object with user-provided data or
299 from the operating system's PRNG. Also, (MAKE-RANDOM-STATE T) will
300 attempt to initialize the returned state from the operating system's
301 PRNG where possible. (Thanks to Fare Rideau; launchpad bug lp#310116)
302 * bug fix: Fix SB-SIMPLE-STREAMS:READ-VECTOR to correctly set the
303 FILE-POSITION of the stream being read from. (launchpad bug lp#491087)
304 * bug fix: Fix grammar and style issues for the docstrings of
305 printer-related variables and functions. (Thanks to mon_key; launchpad
307 * bug fix: Fix compilation on chenygc platforms. Thanks to Larry Valkama and
309 * bug fix: SB-THREAD:CONDITION-WAIT sometimes signaled a deadline twice
310 in a row even though a handler defered the deadline long into the
312 * bug fix: A deadline handler was run without interrupts enabled for a
313 deadline signaled within SB-THREAD:CONDITION-WAIT. That could result
314 in infinitely spinning, non-killable threads.
315 * bug fix: Backtrace from internal-errors on x86-64 os x was truncated
316 before reaching the erring stack frame.
317 * bug fix: Fix type derivation for EXPT when raising a fixnum to a
318 real power. (launchpad bug lp#525949)
319 * bug fix: Fix SB-EXT:GENERATION-* accessors for generations > 0 on
320 GENCGC platforms. (launchpad bug lp#529014)
321 * bug fix: More robust checks for invalid DEFMETHOD argument specializers.
322 (launchpad bug lp#525916)
323 * bug fix: Fix building on Darwin when sysctl is not in the user's PATH.
324 (Thanks to Robert Goldman)
326 changes in sbcl-1.0.35 relative to sbcl-1.0.34:
327 * optimization: ROUND with a single single-float or double-float argument
328 is properly inlined when possible.
329 * optimization: Slightly better code is generated for integer<->float
330 conversions and for single-float<->double-float conversions on x86-64.
331 * optimization: SB-ROTATE-BYTE:ROTATE-BYTE now generates more efficient
332 code for 32-bit and 64-bit rotations on x86-64.
333 * bug fix: The install script changes the ownership of directories as well
334 as files for contrib modules using asdf. (thanks to Eugene Ossintsev;
335 launchpad bug lp#508485)
336 * bug fix: TRUNCATE with a single single-float or double-float argument is
337 properly inlined when possible. (launchpad bug lp#489388)
338 * bug fix: Passing a rotation count of zero to SB-ROTATE-BYTE:ROTATE-BYTE
339 no longer causes a compiler error on x86 and ppc.
340 * bug fix: GET-MACRO-CHARACTER bogusly computed its second return value
341 always relative to *READTABLE* rather than the passed argument.
343 changes in sbcl-1.0.34 relative to sbcl-1.0.33:
344 * minor incompatible change: threading support is now enabled by default
346 * enhancement: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST now also works on most
348 * enhancement: Errors during compile-time-too processing (i.e. EVAL-WHEN)
349 are now caught and reported just like errors during macroexpansion.
350 * enhancement: SB-POSIX now provides access to tcdrain(), tcflow(),
351 tcflush(), tcgetsid(), and tcsendbreak(). (thanks to Jerry James)
352 * enhancement: ASDF systems can now depends on SB-QUEUE.
353 * fixes and improvements related to Unicode and external formats:
354 ** bug fix: error handling and restart usage in the ucs-2 external format
356 ** there is now an implementation of the ucs-4 external format.
357 ** the utf-16 and utf-32 external formats are supported.
358 * bug fix: SB-POSIX wrapper for putenv no longer tries to put lisp strings
359 in the environment. setenv() and unsetenv() are also provided. (reported by
360 Fare Rideau; launchpad bug lp#460455)
361 * bug fix: LOAD of both .fasl and .FASL type files now forces fasl-style
362 loading. This ensures sensible errors for .FASL files from other
363 implementations on case-insensitive filesystems. (reported by Willem
364 Broekema; launchpad bug lp#489417)
365 * bug fix: #p"\\\\" can now be read without error on Win32. (reported by
366 Willem Broekema; launchpad bug lp#489698).
367 * bug fix: some minor code rearrangements to reenable warning-free building
368 from CMUCL (reported by xme@gmx.net; launchpad bug lp#491104)
369 * bug fix: PRINT-OBJECT for clos instances respects the right margin when
371 * bug fix: FIND-PACKAGE & DEFPACKAGE were not thread safe. (reported by
374 changes in sbcl-1.0.33 relative to sbcl-1.0.32:
375 * new port: support added for x86-64 NetBSD. (thanks to Aymeric Vincent)
376 * improvement: support O_LARGEFILE access to files larger than 2GB on
377 x86-64/linux. (thanks to Daniel Janus; launchpad bug lp#453080)
378 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-DIRECTLY to get a list of
379 definitions for methods specializing on the passed class itself.
380 * new feature: SB-INTROSPECT:WHO-SPECIALIZES-GENERALLY to get a list of
381 definitions for methods specializing on the passed class itself, or on
383 * new build flag: :sb-xref-for-internals; SBCL will collect xref information
384 about itself during the build (e.g. for M-? in Slime), if this flag is
385 enabled in customize-target-features.lisp. This will increase the core
386 size by about 5-6mb, though, so it's mostly interesting to SBCL
388 * new feature: various GENCGC tuning parameters have been experimentally
389 documented and exported from SB-EXT. See documentation for details.
390 * fixes and improvements related to Unicode and external formats:
391 ** the Unicode character database has been upgraded to the
392 Unicode 5.2 standard, giving names and properties to a number of new
393 characters, and providing a few extra characters with case
395 ** improvement: restarts for providing replacement input/output on coding
396 errors for fd-stream external formats.
397 ** improvement: where :<encoding> is a keyword corresponding to an
398 external format the system supports, it is now possible to specify
399 (:<encoding> :replacement <character>) as an external format which will
400 automatically substitute <character> on encoding or decoding errors for
401 streams and for STRING-TO-OCTETS and its inverse. (launchpad bug
403 ** improvement: the file streams underlying the standard streams (such as
404 *STANDARD-INPUT*, *TERMINAL-IO*) are opened with an external format
405 which uses the replacement mechanism to handle encoding errors,
406 preventing various infinite error chains and unrecoverable I/O
408 ** minor incompatible change: the utf-8 external format now correctly
409 refuses to encode Lisp characters in the surrogate range (char-codes
410 between #xd800 and #xdfff).
411 ** fix a typo preventing conversion of strings into octet vectors
412 in the latin-2 encoding. (reported by Attila Lendvai; launchpad bug
414 ** fix a bug in the octet multibyte handling of decoding errors and the
415 USE-VALUE restart. (launchpad bug lp#314939)
416 ** fix the bug underlying the expected failure in the FORCE-END-OF-FILE
417 restart on fd-stream decoding errors.
418 ** fix a bug in the ATTEMPT-RESYNC fd-stream decoding restart when the
419 error is near the end of file.
420 ** fix a double-error case in unibyte octet conversions, when the first
421 use of USE-VALUE is ignored.
422 ** fix bugs in handling of undefined code points in unibyte encodings.
423 ** fix LISTEN (and consequent hangs in READ-CHAR-NO-HANG) on bivalent
424 streams after an UNREAD-CHAR.
425 * enhancement: SB-INTROSPECT:ALLOCATION-INFORMATION also reports if the
426 object is allocated in a boxed region of dynamic space.
427 * enhancement: SB-POSIX:FORK now signals an error if an attempt to
428 fork with multiple Lisp threads running is made, instead of going
429 ahead with unpredictable consequences. (reported by Leslie Polzer)
430 * bug fix: uses of slot accessors on specialized method parameters within
431 the bodies of SLOT-VALUE-USING-CLASS methods no longer triggers a type
432 error while finalizing the class. This fix may cause classes with slot
433 accessors to be finalized later than previously. (reported by Lars Rune
434 Nøstdal; launchpad bug lp#473699)
435 * bug fix: restore buildability on the MIPS platform. (regression from
436 1.0.30.38, reported by Samium Gromoff)
437 * bug fix: inspecting closures is less likely to fail with a type error.
438 * bug fix: no timer starvation when setting the system clock back.
439 (launchpad bug lp#460283)
440 * bug fix: WITH-STANDARD-IO-SYNTAX now binds *PRINT-PPRINT-DISPATCH* to the
441 standard pprint dispatch table as specified by CLHS.
442 * bug fix: give CLISP a hint about a type declaration to enable it to build
443 the cross-compiler without warnings. (thanks to Josh Elasser; launchpad
445 * bug fix: correctly dump literal objects in defaulting forms of arglists.
446 (reported by Attila Lendvai; launchpad bug lp#310132)
447 * bug fix: distinguish in type specifiers between arrays that might be
448 complex and arrays that are definitely complex. (launchpad bug lp#309129)
449 * bug fix: SUBTYPEP knows that the SYMBOL type is not SUBTYPEP the KEYWORD
450 type. (reported by Levente Mészáros; launchpad bug lp#485972)
451 * bug fix: setting the value of a symbol-macro within a method in the
452 presence of type declarations works properly again. (reported by Iban
453 Hatchondo; launchpad bug lp#485019)
455 changes in sbcl-1.0.32 relative to sbcl-1.0.31:
456 * optimization: faster FIND and POSITION on strings of unknown element type
457 in high SPEED policies. (thanks to Karol Swietlicki)
458 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
460 * improvement: better error signalling for bogus parameter specializer names
461 in DEFMETHOD forms (reported by Pluijzer)
462 * bug fix: DELETE-FILE once again works on logical pathnames (regression
464 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
466 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
467 removes previous default initargs (reported by Lars Rune Nøstdal and
469 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
470 lambda-lists. (reported by Peter Seibel)
471 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
472 correctly when starting from an executable core without saved runtime
473 options (reported by Faré Rideau, thanks to Zach Beane)
474 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
475 an optimization note instead. (reported by Martin Cracauer)
476 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
477 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
478 new process group if it doesn't need to share stdin with the sbcl
479 process. (thanks to Leslie Polzer)
480 * bug fix: SATISFIES could be misoptimized to refer to a local function.
481 (reported by Stanislaw Halik)
483 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
484 * improvement: stack allocation is should now be possible in all nested
485 inlining cases: failure to stack allocate when equivalent code is manually
486 open coded is now considered a bug.
487 * improvements related to Unicode:
488 ** the Unicode character database has been upgraded to the
489 Unicode 5.1 standard, giving names and properties to a number of new
490 characters, and providing a few extra characters with case
492 ** the system now recognizes and produces names for Unicode Hangul
494 ** the EBCDIC-US external-format is now supported for octet operations
495 (as well as for stream operations).
496 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
497 be used to output toplevel compile-time effects into a separate .CFASL
499 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
500 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
502 * optimization: TRUNCATE on known single- and double-floats is upto 25%
504 * optimization: division of floating point numbers by constants uses
505 multiplication by reciprocal when an exact reciprocal exists.
506 * optimization: multiplication of single- and double-floats floats by
507 constant two has been optimized.
508 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
509 sufficient type information is available. (thanks to Leslie Polzer)
510 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
511 known structure objects are as efficient as defstruct generated accessors.
512 * optimization: unused vector creation can now be optimized away.
513 * improvement: ASDF systems can now depends on SB-INTROSPECT.
514 * improvement: a STYLE-WARNING is signalled when a generic function
515 clobbers an earlier FTYPE proclamation.
516 * improvement: the compiler is able to track the effective type of
517 generic function across method addition and removal even in the
518 absence of an explicit DEFGENERIC.
519 * improvement: DESCRIBE now reports on symbols naming undefined
520 but assumed or declared function as well.
521 * improvement: recompilation of systems using SB-GROVEL now works
522 (thanks to Leslie Polzer)
523 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
524 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
526 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
527 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
528 well as user defined declaration names.
529 ** VARIABLE-INFORMATION is now aware of alien variables.
530 * improvement: improved address space layout on OpenBSD (thanks to Josh
532 * improvement: pretty-printing of various Lisp forms has been improved
533 (thanks to Tobias Rittweiler)
534 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
535 unused were deleted in safe code. (reported by John Fremlin)
536 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
538 * bug fix: some out-of-line array predicates were missing (reported by
540 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
542 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
543 (thanks to Larry D'Anna)
544 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
545 as well. (reported by Josh Elsasser)
546 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
547 leading to possible attempts to delete the same file twice. See docstring
548 on DELETE-FILE for details. (reported by John Fremlin)
549 * bug fix: DELETE-FILE once again deletes the file named by the pathname
550 designator argument, rather than its truename. (reported by Luis
552 * bug fix: the low-level debugger had 32-bit assumptions and was missing
553 information about some array types. (thanks to Luis Oliveira)
554 * bug fix: moderately complex combinations of inline expansions could
555 be miscompiled if the result was declared to be dynamic extent.
556 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
557 form (+ <variable> <integer>) were miscompiled under certain
559 * bug fix: in some cases no compiler note about failure to stack allocate
560 was emitted, even if the objects were in fact heap allocated.
561 * bug fix: minor violation of "otherwise inaccessible" rule for stack
562 allocation could cause objects users might reasonably expect to
563 be heap allocated to be stack allocated.
564 * bug fix: DESCRIBE signalled an error for generic functions under
565 certain circumstances. (thanks to Leslie Polzer)
566 * bug fix: Fixed spelling of an error message.
568 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
569 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
570 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
571 of SB-THREAD:THREAD-ERROR-THREAD.
572 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
573 * new feature: docstrings for local and anonymous functions are no longer
574 discarded. (thanks to Leslie Polzer)
575 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
576 values in other threads.
577 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
578 about object allocation.
579 * optimization: division of a real float by a complex float is implemented
580 with a specialised code sequence.
581 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
582 keywords is an order of magnitude faster.
583 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
584 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
585 methods, and similarly for non-standard metaclass classes as long as there
586 are no methods additional on MAKE-INSTANCE.
587 * optimization: more efficient type-checks for FIXNUMs when the value
588 is known to be a signed word on x86 and x86-64.
589 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
590 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
592 * optimization: compiler is smarter about delegating argument type checks to
594 * optimization: several character functions are now compiled somewhat more
595 efficiently. (reported by Lynn Quam)
596 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
597 * improvement: less unsafe constant folding in floating point arithmetic,
598 especially for mixed complex/real -float operations.
599 * optimization: constant double and single floats are stored in native
600 unboxed format on x86[-64].
601 * optimization: smarter code for arithmetic operations with constant floats,
602 complex floats, or integers on x86[-64].
603 * optimization: smarter code for conjugate/multiplication of float complexes
604 and abs/negate of floats on x86-64.
605 * optimization: more efficient complex float and real float operations on
607 * improvement: complex float division is slightly more stable.
608 * improvement: DESCRIBE output has been reworked to be easier to read and
609 contains more pertinent information.
610 * improvement: failure to provide requested stack allocation compiler notes
611 provided in all cases (requested stack allocation not happening without a
612 note being issued is now considered a bug.)
613 * bug fix: SB-POSIX exports the documented types and functions
614 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
615 types. (reported by "abhi")
616 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
617 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
618 (thanks to Paul Khuong)
619 * bug fix: looping around HANDLER-CASE could silently consume stack space
620 on each iteration. (reported by "foobar")
621 * bug fix: better error signalling when calls to functions seeking elements
622 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
623 (reported by Tobias Rittweiler)
624 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
625 directory components now works as it used to. (various prolems reported by
626 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
627 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
628 (reported by Elliot Slaughter, thanks to Stas Boukarev)
629 * bug fix: bogus undefined variable warnings from fopcompiled references to
630 global variables. (thanks to Lars Rune Nøstdal)
631 * bug fix: foreign function names should now appear in backtraces on
632 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
633 * bug fix: SETF compiler macro documentation strings are not discarded
635 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
636 (thanks to Alex Plotnick)
637 * bug fix: SLEEP accepts large integer arguments, truncating them to
638 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
639 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
640 * bug fix: compiler notes for expensive slot type checks could be emitted
641 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
643 changes in sbcl-1.0.29 relative to 1.0.28:
644 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
645 https://bugs.launchpad.net/sbcl
646 Bugs can be reported directly there, or by sending email to
647 sbcl-bugs@lists.sourceforge.net
648 (no subscription required.)
649 * minor incompatible change: under weak type checking policy integer
650 types are weakened less aggressively.
651 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
652 allowed to return, which causes SBCL to quit with exit status 0. Previously
653 if the function returned with a small integer return value, that value
654 was accidentally reused as the exit status.
655 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
656 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
657 :HASH-FUNCTION argument. Refer to user manual for details.
658 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
660 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
661 microseconds since the Unix epoch on all platforms.
662 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
663 allows the compiler to safely elide boundedness checks for special
665 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
666 the symbol, prohibits both lexical and dynamic binding. This is mainly an
667 efficiency measure for threaded platforms, but also valueable in
669 * new feature: UNC pathnames are now understood by the system on Windows.
670 * optimization: the compiler uses a specialized version of FILL when the
671 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
673 * optimization: accesses to potentially non-simple arrays where element type
674 is known are 50% faster.
675 * optimization: compiler now generates faster array typechecking code.
676 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
678 * optimization: multidimensional array accesses in the absence of type
679 information regarding array rank are approximately 10% faster due to
680 open coding of ARRAY-RANK.
681 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
682 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
684 * optimization: result of call to VECTOR can now be stack allocated.
685 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
686 as long as the resulting array is one-dimensional and has a known
687 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
688 length of the list matches the known length of the vector does not
689 allocate the list as an intermediate step. Ditto for VECTOR and simple
691 * optimization: MAKE-ARRAY can now stack allocate in the presence of
692 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
693 known element type, and is known to be simple and one dimensional.
694 * improvement: SBCL now emits a compiler note where stack allocation was
695 requested but could not be provided (not in all cases, unfortunately)
696 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
697 * improvement: pretty-printing loop has been implemented properly. (thanks
698 to Tobias Rittweiler)
699 * documentation: CLOS slot typechecing policy has been documented.
700 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
701 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
702 pointer, leading to memory faults. (thanks to Bart Botta)
703 * bug fix: better floating point exception handling on x86/OpenBSD.
704 (thanks to Josh Elsasser)
705 * bug fix: exit status from QUIT when called under --script was lost
706 (reported by Hubert Kauker)
707 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
708 same implementation of FILL to initialize the array, even if a more
709 efficient one was available (reported by Stas Boukarev, thanks to
711 * bug fix: potential miscompilation of array stack allocation on x86 and
712 x86-64. (reported by Time Tossavainen)
713 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
714 result in their subforms being treated as top level forms. (reported by
716 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
717 than a machine register could leave garbage in the high bits of the
718 result register (bug 316325).
719 * bug fix: disable address space randomization Linux/x86-64 as well,
720 not just x86-64. (reported by Ken Olum)
721 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
722 generate incorrect code.
723 * bug fix: #201; type inference for CONS and ARRAY types could derive
724 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
725 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
726 could not be assigned to or bound with PROGV. (reported by Lorenz
728 * bug fix: the value of CL:- in the inspector was the previous expression
729 evaluated rather than the expression being evaluated.
730 * bug fix: constants can no longer be locally declared special.
731 * bug fix: signals delivered to threads started from foreign land (read:
732 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
733 thread by blocking all signals and resignalling.
734 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
735 from :INITFORM, if any.
737 changes in sbcl-1.0.28 relative to 1.0.27:
738 * a number of bugs in cross-compilation have been fixed, with the ultimate
739 result that building under (at least) clisp should be much more reliable.
740 * minor incompatible changes: echo-streams now propagate unread-char to the
741 underlying input stream, and no longer permit unreading more than one
743 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
744 frames, allowing for instance more reliable backtraces.
745 * improvement: the debugger REPL can now reference lexical variables
746 by name directly for code compiled with (DEBUG 3).
747 * improvement: errors from malformed declarations now have better source
748 paths associated with them. (thanks to Tobias Rittweiler)
749 * optimization: faster local calls on x86/x86-64
750 * bug fix: some error messages for out-of-bound array indexes confused the
751 index and the bound. (thanks to Stas Boukarev)
752 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
754 * bug fix: running regressions tests in shells without OSTYPE set now works.
755 (reported by Harald Hanche-Olsen)
756 * bug fix: more robust static space exhaustion signalling from
757 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
758 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
759 docstring away instead of storing it under names such as (LAMBDA (X)).
760 (reported by Leslie Polzer)
761 * bug fix: timers could go off in the wrong order, be delayed indefinitely
762 (thanks to Ole Arndt for the patch)
763 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
764 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
765 potentially-invalid effective methods in its cache.
766 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
767 instances as well (thanks to Paul Khuong)
768 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
769 SB-POSIX:WAITPID and their C equivalents.
770 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
772 changes in sbcl-1.0.27 relative to 1.0.26:
773 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
774 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
775 * improvement: the system either recovers from stack exhaustion or dies
776 properly as opposed to leaving the user uncertain of whether the handler
777 trampled on some random memory next to the stack or having to rely on
778 --lose-on-corruption (which is still a good idea to use in production
779 because stack exhaustion can happen in signal handlers which will likely
781 * bug fix: fix gc related interrupt handling bug on ppc (regression from
782 1.0.25.37, reported by Harald Hanche-Olsen)
783 * bug fix: work around signal delivery bug in darwin (regression from
784 1.0.25.44, reported by Sidney Markowitz)
785 * bug fix: fix ERROR leaking memory (reported by David Thompson)
787 changes in sbcl-1.0.26 relative to 1.0.25:
788 * incompatible change: an interruption (be it a function passed to
789 INTERRUPT-THREAD or a timer function) runs in an environment where
790 interrupts can be enabled. The interruption can use
791 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
792 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
793 potentially running out of stack. Keep in mind that in the absence
794 of WITHOUT-INTERRUPTS some potentially blocking operation such as
795 acquiring a lock can enable interrupts.
796 * incompatible change: GC-OFF and GC-ON are removed, as they were
797 always unsafe. Use WITHOUT-GCING instead.
798 * new feature: runtime option --disable-ldb
799 * new feature: runtime option --lose-on-corruption to die at the
800 slightest hint of possibly non-recoverable errors: running out of
801 memory, stack, alien stack, binding stack, encountering a memory
802 fault, etc. In the absence of --lose-on-corruption a warning is
804 * enhancement: detect binding stack exhaustion
805 * enhancement: detect alien stack exhaustion on x86/x86-64
806 * improvement: generally more stable and reliable interrupt handling
807 * improvement: there is a per thread interruption queue,
808 interruptions are executed in order of arrival
809 * improvement: a repeating timer reschedules itself when the it has
810 finished, but expiration times are spaced equally. If an
811 expiration time is in the past it will trigger after a short grace
812 period that may give a chance to other things to run.
813 * optimization: slightly faster gc on multithreaded builds
814 * optimization: faster WITHOUT-GCING
815 * bug fix: when JOIN-THREAD signals an error, do it when not holding
816 important locks so that the debugger/handler doesn't produce
817 recursive errors or deadlock.
818 * bug fix: real-time signals are not used anymore, so no more
819 hanging when the system wide real-time signal queue gets full.
820 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
822 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
823 * bug fix: fix random memory faults related to interrupts on alpha
824 * bug fix: fix random memory faults related to interrupts on sparc
825 * bug fix: fix deadlocks related to starting threads
826 * bug fix: fix deadlines on locks on futex platforms
827 * bug fix: restore errno in signal handlers
828 * bug fix: fix deadlocks related to hash tables
829 * bug fix: fix deadlocks in pcl
831 changes in sbcl-1.0.25 relative to 1.0.24:
832 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
833 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
834 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
835 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
836 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
837 better name and does not return values so stale on multiprocessor systems.
838 Also, HOLDING-MUTEX-P was added for about the only sane usage of
840 * improvement: unithread builds keep track of MUTEX-VALUE.
841 * improvement: reading from a TWO-WAY-STREAM does not touch the output
842 stream anymore making it thread safe to have a concurrent reader and
843 a writer, for instance, in a pipe.
844 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
845 arguments, making compiler-macros for SETF-functions able to inspect
846 their constant arguments.
847 * improvement: COMPILE-FILE reports times with millisecond accuracy
848 (thanks to Luis Oliveira)
849 * optimization: CHAR-CODE type derivation has been improved, making
850 TYPEP elimination on subtypes of CHARACTER work better. (reported
851 by Tobias Rittweiler, patch by Paul Khuong)
852 * bug fix: setting alien structure fields of type struct by value now
853 computes the right offset for the memory copy.
854 * bug fix: compilation problem involving inlined calls to aliens with
855 result type VOID. (reported by Ken Olum)
856 * bug fix: #235a; sequential inline expasion in different policies no
857 longer reuses the functional from the previous expansion site.
858 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
859 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
860 * bug fix: named ENUMs in multiply-referenced alien record types no longer
861 cause an implied type redefinition. Regression from 1.0.21.29.
862 * bug fix: sign-extension of small signed return values now works with C
863 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
864 * improvements to the Windows port:
865 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
866 Westfold, thanks to Rudi Schlatte)
868 changes in sbcl-1.0.24 relative to 1.0.23:
869 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
870 vector of a multidimensional SIMPLE-ARRAY.
871 * new feature: the system now signals a continuable error if standard
872 readtable modification is attempted. (thanks to Tobias Rittweiler)
873 * new feature: DIRECTORY has been extended with a non-standard keyword
874 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
875 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
876 has been robustified and documented better. (thanks to Robert Goldman)
877 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
878 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
879 * tradeoff: constant FORMAT control strings are now compiled unless
880 SPACE > SPEED (previously only when SPEED > SPACE.)
881 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
883 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
885 * bug fix: lexical type declarations are now correctly reported by
886 SB-CLTL2. (reported by Larry D'Anna)
887 * bug fix: STRING-TO-OCTETS did not handle :START properly when
888 using UTF-8 as external format. (thanks to Luis Oliveira)
889 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
890 are signalled correctly. (thanks to Stas Boukarev)
891 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
892 designator. (thanks to Tobias Rittweiler)
893 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
894 designator, and returns T instead of the function. (thanks to
896 * bug fix: direct superclasses of STANDARD-CLASS and
897 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
898 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
899 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
900 when no class with the named slot yet exists no longer causes a
901 compile-time style-warning.
902 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
903 in safe code. (reported by Didier Verna)
904 * bug fix: #430; nested structure constructors can stack allocate.
905 * bug fix: on some 64-bit platforms dynamic space size was truncated
906 to #xffff0000 bytes. (reported by Benjamin Lambert)
907 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
908 REPL unusable. (reported by Daniel Herring)
909 * bug fix: return values of READ-SEQUENCE did not take :START into
910 account on file streams, regressions since 1.0.12.22. (reported by
911 Thomas Russ, patch by Paul Khuong)
912 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
913 method specializer used to confuse permuation vector optimization.
914 * bug fix: system inserted bogus implicit type declarations for local
915 special variables in DEFMETHOD bodies.
916 * bug fix: #354; duplicated frames in backtraces due to
917 non-tail-call-optimized XEPs to functions with return type NIL
919 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
920 initializes structure object slots according to DEFSTRUCT initforms,
921 and DEFSTRUCT forms :INCLUDEind structure classes defined using
922 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
923 (reported by Bruno Haible and Stephen Wilson)
924 * bug fix: #395; fill-pointer output streams used now support
925 element-type BASE-CHAR as well.
926 * bug fix: compiler error when attempting to derive return value of
927 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
929 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
931 * bug fix: Mac OS X binaries should now be portable between Leopard
934 changes in sbcl-1.0.23 relative to 1.0.22:
935 * enhancement: when disassembling method functions, disassembly
936 for the associated fast function is also produced.
937 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
939 * optimization: printing with *PRINT-PRETTY* true is now more
940 efficient as long as the object being printed doesn't require
941 special handling by the pretty printer.
942 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
943 now interact correctly with type declarations.
944 * partial bug fix: PCL detects infinite recursion during wrapper
945 validation. (thanks to Attila Lendvai)
946 * bug fix: #426; nested function calls are inlined properly.
947 Previously if FOO was an inline function, in calls of the form
948 (FOO (FOO ...)) the outer call was not inlined.
949 * bug fix: long long arguments passed in registers to alien
950 functions on PowerPC Linux and NetBSD are now handled correctly
951 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
953 changes in sbcl-1.0.22 relative to 1.0.21:
954 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
955 for the shared object in the current directory, but passes the native
956 namestring of the designated pathname to the operation system's shared
957 object loading function as-it.
958 * minor incompatible change: --disable-debugger toplevel option now takes
959 effect before processing of initialization files and --eval or --load
961 * new feature: new commandline argument: --script, which supports
962 shebang lines. See documentation for details. (based on work by
964 * new feature: SAVE-LISP-AND-DIE can save current values of
965 --dynamic-space-size and --control-stack-size in the executable core,
966 causing it to skip normal runtime option processing. See documentation
967 for details. (thanks to Zach Beane)
968 * enhancement: inoccous calls to EVAL or generic functions dispatching
969 on subclasses of eg. STREAM no longer cause compiler notes to appear.
970 * enhancement: the system no longer resignals errors from --load and
971 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
972 associated with the original error to be lost. (thanks to Ariel
974 * enhancement: :DONT-SAVE keyword argument has been added to
975 LOAD-SHARED-OBJECT for controlling interaction with
976 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
977 the effects of an earlier LOAD-SHARED-OBJECT call.
978 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
979 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
980 provided. (reported by Cedric St-Jean)
981 * bug fix: circularity handling in the reader did not treat raw
982 structure slots correctly. (reported by Cedric St-Jean)
983 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
984 file descriptors when there were none.
985 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
986 was broken. (reporteed by Willem Broekema)
987 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
988 pathnames without a directory.
989 * bug fix: COMPILE-FILE did not warn about undefined variable
990 references at toplevel, and LOAD of the resulting fasl did
992 * bug fix: functions with non-required arguments used to end up with
993 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
994 * bug fix: redefining a function with non-required arguments didn't
995 update the system's knowledge about its call signature properly.
996 * bug fix: fixed #431; incompatible alien record type redefinitions
997 are detected and handled. (reported by Neil Haven)
998 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
999 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
1001 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
1002 after alien stack frames.
1003 * bug fix: strings passed to mk{s,d}temp lacked null termination
1005 changes in sbcl-1.0.21 relative to 1.0.20:
1006 * new feature: the compiler is able to track the effective type of a
1007 generic function across method addition and removal.
1008 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
1009 appropriately typed structure slots without locking.
1010 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
1011 information like those gathered by TIME using a programming-friendly
1013 * new feature: TIME reports time taken even if the form performs a
1014 non-local transfer of control.
1015 * enhancement: reduced conservativism on GENCGC platforms: on
1016 average 45% less pages pinned (measured from SBCL self build).
1017 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
1018 mutate constant symbols or violate declaimed type of the symbol.
1019 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
1020 sleeping on the semaphore in heavily contested semaphores.
1021 * bug fix: semaphores and condition variables were not interrupt
1023 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
1024 owned by other threads anymore.
1025 * bug fix: FIND on lists called KEY outside the specified
1026 subsequence. (reported by budden)
1027 * bug fix: LOG doesn't use single-float intermediate results when
1028 given mixed integer and double-float arguments, leading to better
1029 precision. (reported by Bob Felts)
1030 * bug fix: LOG with base zero returned values of inconsistent type.
1032 changes in sbcl-1.0.20 relative to 1.0.19:
1033 * minor incompatible change: OPTIMIZE qualities
1034 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
1035 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
1036 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
1037 * documentation: some slot access efficiency guidelines have been
1038 added to the user manual.
1039 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
1040 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
1041 as ASSOC and MEMEBER.
1042 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
1043 to more efficient EQ-comparison versions more often.
1044 * optimization: enhanced derivation of DOLIST iteration variable type
1046 * optimization: constant folding of simple (LIST ...) forms as DOLIST
1048 * optimization: runtime lookup of function definitions can be
1049 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
1050 * optimization: compiler is able to derive the return type of
1051 (AREF (THE STRING X) Y) as being CHARACTER.
1052 * optimization: CLRHASH on empty hash-tables no longer does pointless
1053 work. (thanks to Alec Berryman)
1054 * optimization: REPLACE deftransforms don't punt when :START1 or
1056 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
1057 no longer emits a code deletion note. (reported by Andrew
1059 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
1060 functions with an odd number of &OPTIONAL arguments, a &REST
1061 argument, and one or more &KEY arguments at the call site.
1062 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
1063 arguments appeared at call sites as well.
1064 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
1065 READ-LINE &co can no longer read from them afterwards. (reported
1067 * bug fix: fixed #427: unused local aliens no longer cause compiler
1068 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
1070 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
1071 alien-stack leakage. (reported by Andy Hefner)
1072 * bug fix: PROGV signals an error when an attempt to violate declared
1073 type of a variable or bind a constant is made.
1074 * bug fix: SET signals an error when an attempt to violate declared
1075 type of a variable is made.
1076 * bug fix: restart computation during the execution of a restart
1077 test function no longer causes infinite recursion. (reported by
1079 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
1080 signals an error. (thanks to Pierre Mai)
1081 * bug fix: EXPORT left symbol unexported in conflict situations.
1082 (thanks to Michael Weber)
1083 * bug fix: correctly handle name conflicts involving CL:NIL.
1084 (thanks to Michael Weber)
1085 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
1086 conflicts arising from USEing package with conflicting symbols
1087 correctly. (thanks to Michael Weber)
1089 changes in sbcl-1.0.19 relative to 1.0.18:
1090 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
1091 warnings that go otherwise unhandled will be muffled if they are
1092 of the type that's the value of this variable.
1093 * optimization: stack allocation is slightly more efficient on x86
1095 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
1096 where a raw slot always is initialized using the initform whose
1097 type is not know sufficiently well a compile-time are now compiled
1098 correctly. (reported by John Morrison)
1099 * bug fix: compiler no longer makes erronous assumptions in the
1100 presence of non-foldable SATISFIES types.
1101 * bug fix: stack analysis missed cleanups of dynamic-extent
1102 arguments in non-let-converted calls to local functions.
1103 * improvements to the Windows port:
1104 ** adjusted address spaces for building on both Win32 and
1105 Win64. (thanks for John Connors)
1106 * fixed some bugs revealed by Paul Dietz' test suite:
1107 ** interval arithmetic during type derivation used inexact integer
1108 to single-float coercions.
1109 ** arithmetic operations involving large integers and single
1110 floats give the same results in compiled and interpreted code.
1111 ** deriving the result type of COERCE no longer signals an error
1112 if the derived type of the second argument is a MEMBER type
1113 containing invalid type specifiers.
1114 ** ADJOIN with constant NIL as second argument works correctly.
1115 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
1117 changes in sbcl-1.0.18 relative to 1.0.17:
1118 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
1119 profiles only the current thread.
1120 * minor incompatible change: changes to SYMBOL-VALUE of constants
1121 defined with DEFCONSTANT now signal an error.
1122 * enhancement: SB-SPROF now has support for wallclock profiling,
1123 and is also able to profile specific threads. REPORT output
1124 has also additional sorting options.
1125 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
1127 * optimization: structure allocation has been improved
1128 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
1129 ** out of line constructors are ~10% faster.
1130 ** inline constructors are ~15% faster.
1131 ** inline constructors are capable of dynamic extent allocation
1132 (generally on x86 and x86-64, in some cases on other platforms
1134 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
1136 * optimization: file compiler is now able to coalesce non-circular
1137 lists, non-base strings, and bit-vectors. Additionally, constants
1138 are never referenced through SYMBOL-VALUE at runtime.
1139 * optimization: code defining methods on PRINT-OBJECT (and other
1140 generic functions in the COMMON-LISP package) now loads faster.
1141 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
1143 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
1144 fasl is now deleted. (reported by Attila Lendvai)
1145 * bug fix: READ-LINE always returned NIL for the last line in files.
1146 (reported by Yoshinori Tahara)
1147 * bug fix: more accurate disassembly annotations of foreign function
1148 calls. (thanks to Andy Hefner)
1149 * bug fix: trimming non-simple strings and non-string string
1150 designators when the there is nothing to trim works properly.
1151 (thanks to James Knight)
1152 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
1153 (thanks to Travis Cross)
1154 * fixed some bugs revealed by Paul Dietz' test suite:
1155 ** NIL is a valid function name (regression at 1.0.13.38)
1156 ** FILL on lists was missing its return value (regression at 1.0.12.27)
1157 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1158 fill pointers properly (regression at 1.0.12.23)
1159 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
1160 displacement indices properly (regression at 1.0.12.23)
1162 changes in sbcl-1.0.17 relative to 1.0.16:
1163 * temporary regression: user code can no longer allocate closure
1164 variable storage on stack, due to bug 419 without explicitly
1165 requesting it. Please consult sbcl-devel for advice if you need to
1166 use this feature in the meanwhile.
1167 * new feature: runtime argument --control-stack-size can be used to
1168 adjust thread default control stack size.
1169 * enhancement: improved TIME output
1170 ** all times are reported using the measured accuracy (milliseconds
1171 for real and GC times, microseconds for everything else.)
1172 ** processor cycle counts on x86 and x86-64.
1173 ** interpreted forms are counted for both evaluator modes.
1174 ** number of lambdas converted by the compiler is reported.
1175 ** CPU percentage report (computed from real and total run time.)
1176 ** more comprehensive run time reporting, using a condenced format
1177 ** interperted form, lambda, and page fault counts are omitted
1179 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
1181 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
1182 * optimization: two argument forms of LAST are upto ~10% faster
1183 in normal SPEED policies.
1184 * optimization: NCONC no longer needs to heap cons its &REST list
1185 in normal SPEED policies.
1186 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
1187 to Sidney Markowitz)
1188 * bug fix: UNION and NUNION work with :TEST-NOT once more,
1189 regression since 1.0.9.1. (thanks to Eric Marsden)
1190 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
1191 since 1.0.15.36. (thanks to Paul Khuong)
1192 * bug fix: LAST when always returned the whole list when given a bignum
1193 as the second argument.
1194 * bug fix: dynamic extent allocation of nested lists and vectors
1195 could leak to otherwise accessible parts.
1196 * bug fix: invalid optimization of heap-allocated alien variable
1198 * bug fix: fasl header checking is less vulnerable to different
1199 platform word lengths.
1200 * bug fix: more correct assembler syntax for GNU binutils
1201 2.18.50.0.4 support. (thanks to Marijn Schouten)
1202 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
1204 * bug fix: the fopcompiler can handle LOCALLY forms (with no
1205 declarations) successfully. (reported by Attila Lendvai)
1207 changes in sbcl-1.0.16 relative to 1.0.15:
1208 * minor incompatible change: revert the changes to sb-posix's error
1209 signaling added in 1.0.14.
1210 * minor incompatible change: change PROBE-FILE back to returning
1211 NIL whenever we can't get a truename, as was the case before 1.0.14.
1212 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
1213 inherits from ERROR instead of just CONDITION.
1214 * new feature: SB-INTROSPECT can provide source locations for instances
1215 as well. (thanks to Tobias Rittweiler)
1216 * optimization: binding special variables now generates smaller code
1217 on threaded platforms.
1218 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
1219 and cases where no :TEST is given but the compiler can infer that
1220 the element to search is of type (OR FIXNUM (NOT NUMBER)).
1221 * optimization: better LOGNOT on fixnums.
1222 * optimization: modular arithmetic for a particular requested width
1223 is implemented using a tagged representation unless a better
1224 representation is available.
1225 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
1226 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
1227 for wellformedness and returns a specialized vector. (reported by
1228 Francois-Rene Rideau)
1229 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
1230 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
1231 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
1232 unscheduling timer at the same time as another timer fires.
1233 * bug fix: don't reschedule timers for dead threads.
1234 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
1235 * bug fix: copying output from RUN-PROGRAM to a stream signalled
1236 bogus errors if select() was interrupted.
1237 * enhancement: add support for fcntl's struct flock to SB-POSIX.
1239 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
1240 * enhancement: cleaner backtraces for interactive interrupts, as
1241 well as other cases where the interesting frames used to be
1242 obscured by interrupt handling frames.
1243 * enhancement: untracing a whole package using (UNTRACE "FOO") is
1244 now supported, and tracing a whole package using (TRACE "FOO") now
1245 traces SETF-functions as well.
1246 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
1247 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
1248 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
1249 * unreadably printed representation of hash-tables now includes
1251 * bug fix: partially fixed #188: type propagation from assignments
1252 is now more efficient.
1253 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
1254 'DOUBLE-FLOAT) are not flushable.
1255 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
1256 full address of the object, and none of the tag bits.
1257 * bug fix: readably printing hash-tables now respects other printer
1258 control variables. (reported by Cedric St-Jean)
1259 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
1260 keyword with MAKE-HASH-TABLE.
1261 * bug fix: export SB-POSIX:MKSTEMP.
1262 * bug fix: SORT was not interrupt safe.
1263 * bug fix: XREF accounts for the last node of each basic-block as
1265 * bug fix: MAKE-INSTANCE optimizations interacted badly with
1266 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
1267 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
1268 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
1269 create obsolete instances in the case of redefinition or
1270 obsoletion of a superclass. (thanks to Andy Hefner)
1271 * bug fix: Support for the Alpha architecture has been revived; it had
1272 suffered somewhat from lack of maintenance since sbcl-1.0.
1273 * improvements to the Windows port:
1274 ** The system detects the codepage to use at startup, instead of
1275 using the value from the saved core. (thanks to Kei Suzuki)
1277 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
1278 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
1279 (see documentation for details.)
1280 * revived support for OpenBSD (contributed by Josh Elsasser)
1281 * partially fixed bug #108: ROOM no longer suffers from occasional
1282 (AVER (SAP= CURRENT END)) failures.
1283 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
1284 bodies no longer cause a WARNING to be signalled. (reported by
1286 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
1287 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
1288 the bug in TRUNCATE.) (reported by Michael Weber)
1289 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
1290 no samples. (reported by Andy Hefner)
1291 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
1292 no longer appear as (NIL ...) frames in backtraces.
1293 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
1294 is now actually exported from SB-EXT as documented. (reported by
1296 * bug fix: sb-aclrepl now correctly understands how to inspect
1297 single-floats on 64-bit platforms where single-floats are not boxed.
1298 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
1299 yet been finalized. (reported by Levente Meszaros)
1300 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
1301 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
1302 SBCL-specific optimize qualities.
1304 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
1305 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
1306 an executable in the search path, and does so in the child
1307 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
1308 been removed; it can be found in the CVS history, for somebody who
1309 needs that search behavior (see the manual).
1310 * minor incompatible change: compiler policy re. weakening type
1311 checks has changed: now type checks are weakened only if SAFETY < 2
1313 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
1314 unparsing of directory pathnames as files. Analogously,
1315 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
1316 filename to parse into a directory pathname.
1317 * enhancement: implicit generic function creation now signals a
1318 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
1319 users can bind handlers for and muffle around calls to LOAD.
1320 * enhancement: RUN-PROGRAM allows unicode arguments and environments
1321 to be used (using the default stream external format), and allows
1322 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
1323 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
1324 strings and vectors whose element-type or simplicity is not fully
1325 known at compile-time.
1326 * optimization: STRING-TRIM and related functions no longer allocate
1327 a new string when no trimming needs to be performed. These functions
1328 are also faster than before when the input string has been declared
1330 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
1331 * optimization: READ-LINE is significantly faster for files containing
1333 * optimization: non-open coded uses of character comparison operators
1334 (e.g. char=) no longer cons when called with more than one parameter
1335 on platforms supporting dynamic-extent allocation.
1336 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
1337 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
1338 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
1340 * bug fix: some sequence functions elided bounds checking when
1342 * bug fix: too liberal weakening of union-type checks when SPEED >
1344 * bug fix: more bogus fixnum declarations in ROOM implementation
1347 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
1348 * new feature: MAKE-HASH-TABLE now experimentally accepts a
1349 :SYNCHRONIZED argument, which makes the hash-table safe for
1350 concurrent accesses (but not iteration.) See also:
1351 SB-EXT:WITH-LOCKED-HASH-TABLE, and
1352 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
1353 * optimization: CONCATENATE on strings is an order of magnitude faster
1354 in code compiled with (> SPEED SPACE).
1355 * optimization: SUBSEQ is ~50% faster on lists.
1356 * bug fix: bug 417 fixed -- source location reporting is now more robust.
1357 * bug fix: SUBSEQ on a list will now correctly signal an error if if
1358 END is smaller then START.
1359 * bug fix: SB-PROFILE will no longer report extra consing for nested
1360 calls to profiled functions.
1361 * bug fix: ROOM implementation had bogus fixnum declarations which
1362 could cause type-errors when calling ROOM on large images.
1363 * bug fix: if file compilation is aborted, the partial fasl is now
1364 deleted, and COMPILE-FILE returns NIL as the primary value.
1365 * bug fix: number of thread safety issues relating to SBCL's internal
1366 hash-table usage have been fixed.
1367 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
1368 be returned from its body when the values were being returned
1369 using unknown-values return convection and the W-P-O was wrapped
1370 inside an UNWIND-PROTECT.
1371 * bug fix: sb-posix should now compile again under Windows, enabling
1372 slime to work again.
1374 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
1375 * incompatible change: hash-table accessor functions are no longer
1376 automatically protected by locks. Concurrent accesses on the same hash-table
1377 from multiple threads can give inconsistent results or even corrupt the
1378 hash-table completely. Multi-threaded applications should do their own
1379 locking at the correct granularity. In the current implementation it is
1380 still safe to have multiple readers access the same table, but it's not
1381 guaranteed that this property will be maintained in future releases.
1382 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
1383 and will signal an error at runtime.
1384 * enhancement: SB-THREAD package now exports a semaphore interface.
1385 * enhancement: CONS can now stack-allocate on x86 and
1386 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
1388 * enhancement: nested lists can now be stack allocated on
1389 platforms providing stack allocation support.
1390 * enhancement: dynamic-extent support has been extended to support
1391 cases where there are multiple possible sources for the stack
1393 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
1394 if the mutex is uncontested on Linux.
1395 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
1396 as specified by the CLHS. (thanks to Tobias Rittweiler)
1397 * bug fix: NaN comparison now works on x86-64.
1398 * bug fix: CLOSE :ABORT T on a stream with pending output now
1400 * bug fix: instances of non-standard metaclasses using standard
1401 instance structure protocol sometimes missed the slot type checks
1403 * bug fix: known functions can be inlined in high-debug code.
1405 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
1406 * minor incompatible change: the MSI installer on Windows no longer
1407 associates .lisp and .fasl files with the installed SBCL.
1408 * minor incompatible change: :UNIX is no longer present in *FEATURES*
1409 on Windows. (thanks to Luis Oliviera)
1410 * new feature: SB-CLTL2 contrib module now implements
1411 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
1412 * optimization: scavenging weak pointers is now more efficient,
1413 requiring O(1) instead of O(N) per weak pointer to identify
1414 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
1415 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
1416 method bodies using constant slot-names when the first argument is
1417 a specializer parameter for the method.
1418 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
1419 names, when the class of the instance is a direct instance
1420 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
1421 as slow as the constant slot-name case.)
1422 * optimization: member type construction is now O(N) instead
1424 * optimization: UNION and NUNION are now O(N+M) for large
1425 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
1427 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
1428 now more readable in environments like Slime which display it.
1429 (thanks to Tobias C. Rittweiler)
1430 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
1431 was able to infer the correct argument type for the object on which
1432 the CAS operation was being performed.
1433 * bug fix: copy propagation interfered with parallel assignment
1434 semantics in local calls. (reported by Paul Khuong)
1435 * bug fix: the signed modular fixnum shift compiled to wrong code on
1436 x86 and x86-64. (spotted by a slight modification to some of
1439 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
1440 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
1441 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
1442 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
1444 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
1445 and generic function now print the object identity for anonymous
1446 instances. (thanks to Attila Lendvai)
1447 * enhancement: as an extension to MOP, SBCL now supports SETF of
1448 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
1449 (thanks to Attila Lendvai)
1450 * enhancement: sb-cover has an alternate annotation mode which puts
1451 the form annotations at the car of the form, instead of annotating
1452 it completely. The benefit of this mode is that it shows better
1453 which forms were instrumented by the compiler.
1454 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1455 by printer control variables. (reported by Dan Corkill)
1456 * bug fix: system leaked memory when delayed output was performed by
1457 the OS in smaller chunks then expected. (thanks to David Smith)
1458 * bug fix: system leaked memory when file streams were not closed
1460 * bug fix: large objects written to slow streams that were modified
1461 after the write could end up with the modified state written to
1462 the underlying file descriptor.
1463 * bug fix: multiple threads operating in parallel on the same stream
1464 could cause buffer-overflows.
1465 * bug fix: source location information is stored correctly
1466 (broken since 1.0.6). This bug would generally show up as the
1467 Slime debugger highlighting the wrong form when the sldb-show-source
1469 * bug fix: Branch forms are again annotated as branches in the sb-cover
1471 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1472 on x86-64. (reported by Gregory Vanuxem)
1473 * bug fix: EQUALP could return wrong results for structures with raw
1474 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1475 word). (reported by Vjacheslav Fyodorov)
1476 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1479 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1480 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1481 atomic compare-and-swap operations on threaded platforms.
1482 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1483 allows assigning a global minimum value to optimization qualities
1484 (overriding proclamations and declarations).
1485 * enhancement: closed over variables can be stack-allocated on x86
1487 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1489 * optimization: slot definition lookup is now O(1). This speeds up
1490 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1491 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1492 * optimization: ASSOC and MEMBER can now be open-coded for all
1493 combinations of keyword arguments when second argument is constant
1494 and SPEED >= SPACE. In other cases a specialized version is
1496 * bug fix: using obsoleted structure instances with TYPEP and
1497 generic functions now signals a sensible error.
1498 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1499 (reported by Kristoffer Kvello)
1500 * bug fix: backtrace construction is now more careful when making
1501 lisp-objects from pointers on the stack, to avoid creating bogus
1502 objects that can be seen by the GC.
1503 * bug fix: defaulting of values in contexts expecting more than 7
1504 variables now works on x86-64. (reported by Christopher Laux)
1505 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1507 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1508 as the property-list of a symbol.
1509 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1510 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1511 situations requested, are once again file-compileable. (reported
1514 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1515 * MOP improvement: support for user-defined subclasses of
1516 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1517 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1518 the expansion of DEFMETHOD, is responsible for generating a form
1519 which creates a list of specializers when evaluated. Additional
1520 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1521 debugging and introspective support.
1522 * minor incompatible change: the (unsupported) spinlock interface
1523 has changed: free spinlock now has the value NIL, and a held spinlock
1524 has the owning thread as its value.
1525 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1526 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1528 * enhancement: name of a socket-stream is now "a socket" instead of
1529 "a constant string".
1530 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1531 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1532 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1533 for generic functions. (Thanks to Tobias C. Rittweiler)
1534 * optimization: bignum printing speed has been improved by 20-40%
1535 (depending on the bignum size.)
1536 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1538 * bug fix: the cache used by the CLOS to store precomputed effective
1539 methods, slot offsets, and constant return values is now thread and
1541 * bug fix: generic function dispatch function updating is now thread
1542 and interrupt safe (in the sense that the known issues have been
1544 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1545 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1546 * bug fix: asdf systems with dependencies to the SB-POSIX or
1547 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1548 * bug fix: interrupt safety of applicable method computation has been
1551 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1552 * new contrib: sb-cover, an experimental code coverage tool, is included
1553 as a contrib module.
1554 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1555 significantly faster.
1556 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1557 produce more efficient code on x86-64 if the compiler can determine
1558 that (+ INDEX <constant>) does not require a bounds check and FOO
1559 has an element type at least 8 bits wide.
1560 * enhancement: a new, experimental synchronous timeout facility is
1561 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1562 * enhancement: when a symbol name conflict error arises, the
1563 conflicting symbols are always printed with a package prefix.
1564 (thanks to Kevin Reid)
1565 * enhancement: stepping is now once again supported on the SPARC and
1566 MIPS platforms. (It is also now more likely to work on CheneyGC
1568 * enhancement: sb-sprof can now also track and report accurate call
1570 * bug fixes: the treatment of non-standard subclasses of
1571 SB-MOP:SPECIALIZER is more correct.
1572 * incompatible change: PURIFY no longer copies the data from the
1573 dynamic space into the static and read-only spaces on platforms
1574 that use the generational garbage collector
1575 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1577 * bug fix: GC race condition occasionally resulting in crashes with
1578 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1580 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1582 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1583 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1584 * bug fix: an asynchronous interrupt could previously leave the
1585 system running with GC inhibited.
1586 * bug fix: a DECLARE form evaluated at top-level now causes an error
1587 rather than silently (or verbosely) returning NIL.
1588 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1589 result in a error being signalled due to source form lookup errors.
1590 (reported by Peter Graves)
1592 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1593 * incompatible change: removed writer methods for host-ent-name,
1594 host-ent-addresses -- changing the values did not update the DNS
1596 * minor incompatible change: changed experimental JOIN-THREAD interface
1597 * documentation: the manual now lists reader and writer methods
1598 in class slot documentation sections. (thanks to Richard M Kreuter)
1599 * documentation: unwinding from asyncronous events has been
1600 documented as unsafe.
1601 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1602 in multithreaded application code.
1603 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1604 platforms. (thanks to James Anderson for the optimization hint)
1605 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1607 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1608 variants no longer cons.
1609 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1610 their NOT- variants no longer cons.
1611 * optimization: EQUAL hash tables no longer use SXHASH for objects
1612 of all data types, but instead use an EQL hash for types for which
1613 EQUAL is the same as EQL.
1614 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1615 are significantly faster.
1616 * optimization: new STRING-OUTPUT-STREAM implementation is much
1617 faster for large outputs and conses 30% less on average.
1618 * enhancement: XREF information is now collected for references made
1619 to global variables using SYMBOL-VALUE and a constant argument.
1620 * enhancement: SIGINT now causes a specific condition
1621 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1622 * bug fix: FILE-POSITION used to signal an error in some cases where
1623 ANSI requires it to return NIL.
1624 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1625 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1626 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1628 * bug fix: bad type declaration in the CLOS implementation has
1629 been fixed. (reported by James Anderson)
1630 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1631 (thanks to Lutz Euler)
1632 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1633 required by the CLHS. (reported by Samium Gromoff)
1634 * bug fix: dead unbound variable references now signal an error.
1635 (reported by Marco Monteiro)
1636 * bug fix: / with an unused value was being deleted in safe code.
1637 (thanks to Marco Monteiro and Kevin Reid)
1638 * bug fix: number of characters that can be written onto a single
1639 line in a file is unlimited.
1640 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1641 been fixed by inhibiting interrupts for when GC is disabled.
1642 * bug fix: some interrupt safety issues with GETHASH, (SETF
1643 GETHASH), CLRHASH and REMHASH have been fixed.
1644 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1645 specifier no longer causes infinite recursion.
1646 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1647 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1648 * bug fix: an &environment argument with the correct variable information
1649 is passed to macros that are expanded during byte compilation.
1650 (reported by Samium Gromoff)
1651 * bug fix: a logic error was causing the hash function for bignums to
1652 have excessive amounts of collisions. (reported by Faré Rideau)
1653 * bug fix: modifying the contents of an array could change the return
1654 value of SXHASH on that array, which is only allowed for strings
1655 and bit vectors. (bug introduced in 0.9.16)
1656 * improvement: the x86-64/darwin port now passes all tests (except
1657 for the debugger tests) but should still be considered
1658 experimental until this is fixed.
1659 * improvement: a style-warning is signaled for CASE (etc) clauses with
1660 duplicate keys. (thanks to Kevin Reid)
1661 * improvement: macos/x86 and macos/x86-64 now use mach exception
1662 handlers for dealing with illegal instructions (for trapping and
1663 error handling) and memory protection violations (for GC).
1665 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1666 * new platform: experimental support for x86-64/darwin (MacOS).
1667 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1668 and getnameinfo sockets functions are used instead of gethostbyaddr
1669 and gethostbyname, on platforms where the newer functions are available.
1670 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1672 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1673 don't print the startup banner, but behave as if --noinform was passed
1674 as a command line argument. (thanks to Kevin Reid)
1675 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1676 * optimization: code using alien values with undeclared types is much faster.
1677 * optimization: the compiler is now able to open code SEARCH in more cases.
1678 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1679 * bug fix: using standardized COMMON-LISP special variables as loop
1680 variables no longer signals bogus package lock violations. (reported
1682 * bug fix: declaring local loop variables to be of a range-limited type
1683 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1684 (reported by Andras Simon)
1685 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1686 bugs remain on x86-64.)
1687 * bug fix: the #= and ## reader macros now interact reasonably with
1688 funcallable instances.
1689 * bug fix: type-checks for function arguments were compiled using the
1690 compiler policy settings of the wrong lexical environment (in 1.0.2
1692 * bug fix: SHADOW accepts characters as string designators, as required
1693 by the spec (thanks to Eric Marsden)
1694 * bug fix: fixed GC safety issues when foreign functions are called with
1695 non-base strings as arguments
1696 * bug fix: more consistent error output for fatal-compiler-warnings, like
1698 * bug fix: functions with proper names were showing up as NIL in
1699 backtraces (reported by Edi Weitz, regression in 1.0.2)
1701 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1702 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1703 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1704 produce more efficient code on the x86 if the compiler can determine
1705 that (+ INDEX <constant>) does not require a bounds check and FOO
1706 has an element type at least 8 bits wide.
1707 * bug fix: references to undefined variables are handled the same way
1708 in toplevel forms as in the normal compiler
1709 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1711 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1712 (thanks to Jon Buller)
1713 * improvement: faster compilation times for complex functions
1714 * improvement: added readlink support to SB-POSIX (thanks to Richard
1717 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1718 * improvement: experimental support for mach exception handling on
1719 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1721 * improvement: support for GBK external format.
1722 (thanks to Chun Tian (binghe))
1723 * improvement: the debugger now displays variables that have been closed
1724 over, in code compiled with (DEBUG 2) or higher
1725 * improvement: support for executable cores on NetBSD (thanks to
1727 * new feature: added a RESTART-FRAME debugger command
1728 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1729 be used to provide an implementation for FILE-POSITION on Gray streams
1730 (thanks to Eric Marsden)
1731 * new feature: add syslog, openlog and closelog support to SB-POSIX
1732 (thanks to Richard Kreuter)
1733 * optimization: the function call overhead in code compiled with
1734 a high DEBUG optimization setting is significantly
1735 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1736 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1737 (thanks to Tony Martinez)
1738 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1739 evaluated once (reported by Kevin Reid)
1740 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1741 works again (thanks to Kilian Sprotte)
1742 * bug fix: an error is signaled for tagbodies with duplicate tags
1743 (thanks to Stephen Wilson)
1744 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1745 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1746 stack frames from alien callbacks.
1747 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1748 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1749 65k pages (thanks to David Woodhouse)
1750 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1752 changes in sbcl-1.0.1 relative to sbcl-1.0:
1753 * new platform: FreeBSD/x86-64, including support for threading.
1754 * new feature: the compiler stores cross-referencing information
1755 about function calls (who-calls), macroexpansion (who-macroexpands)
1756 and special variables (who-binds, who-sets, who-references) for code
1757 compiled with (< SPACE 3). This information is available through the
1758 sb-introspect contrib.
1759 * new feature: users may subclass SEQUENCE, and have instances of
1760 these classes interoperate with standard Common Lisp functions if
1761 a number of methods are defined. (This feature is experimental
1762 and the interface subject to change based on feedback from SBCL
1763 users and the general community)
1764 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1765 x86/x86-64, rather than the previous fixed depth of 8
1766 * improvement: another pthread back-end of mutex "pthread-futex".
1767 * bug fix: non-ascii command-line arguments are processed correctly
1768 (thanks to Yaroslav Kavenchuk)
1769 * bug fix: non-required arguments were not passed correctly when a method
1770 defined using DEFMETHOD was called from a mop-generated method using
1771 CALL-NEXT-METHOD (reported by Pascal Costanza)
1772 * bug fix: recursion is now permitted in accessors through
1773 SLOT-UNBOUND. (reported by Pascal Costanza)
1774 * bug fix: an error was signaled at startup if the HOME environment
1775 variable was defined, but had an empty value (reported by Peter Van Eynde)
1776 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1777 signal a PROGRAM-ERROR, not a BUG.
1778 * bug fix: SB-POSIX:READDIR works when built with large file support.
1779 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1781 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1782 for better automatic indentation support. (thanks to Matt Pillsbury)
1783 * optimization: loading generic functions no longer takes O(n^2) time,
1784 proportional to the amount of methods in the generic function
1785 (reported by Todd Sabin and Jeremy Brown)
1786 * optimization: the FIND and POSITION family of sequence functions
1787 are significantly faster on arrays whose element types have been
1789 * improvements to the Windows port:
1790 ** Intermittent heap corruption problems have been fixed. (thanks
1791 to Alastair Bridgewater)
1792 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1794 ** Lisp is able to unwind foreign exception frames from alien
1795 callbacks. (thanks to Alastair Bridgewater)
1797 changes in sbcl-1.0 relative to sbcl-0.9.18:
1798 * improvement: experimental support for threading on FreeBSD/x86.
1799 (thanks to NIIMI Satoshi)
1800 * improvement: runtime option --dynamic-space-size can be used
1801 to set the size of the dynamic space reserved on startup.
1802 * improvement: floating point modes in effect are now saved in
1803 core, and restored on startup.
1804 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1805 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1806 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1807 threads are not running after *SAVE-HOOKS* have run.
1808 * improvement: writes to CLOS instance slots are type-checked in code
1809 compiled with (SAFETY 3)
1810 * improvement: floating-point exception handling on FreeBSD (thanks to
1812 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1813 (thanks to Zach Beane)
1814 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1816 * improvement: added support for the Shift-JIS external format.
1817 (contributed by NIIMI Satoshi)
1818 * improvement: callbacks are supported on Linux/PPC. (thanks to
1820 * bug fix: compiler bug triggered by a (non-standard) VALUES
1821 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1822 * bug fix: file compiler no longer confuses validated and already
1823 dumped structurres. (reported by Kaersten Poeck)
1824 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1825 fill-pointer signals a type-error as required. (thanks to
1827 * bug fix: disassemly of funcallable instances works.
1828 * bug fix: single stepping on PPC.
1829 * bug fix: fix thread-safety problems in the type system (generally
1830 manifesting as nonsensical errors like "STRING is a bad type specifier
1831 for sequences" or "The value 1 is not of type FIXNUM")
1832 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1833 (reported by Josip Gracin)
1834 * bug fix: an error is signaled for attempts to displace arrays with
1835 incompatible element types (thanks to Mario Mommer)
1836 * bug fix: more correct handling of wide characters in debug info
1837 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1838 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1839 and don't cause extra consing
1840 * optimization: MAP and MAP-INTO are significantly faster on vectors
1841 whose elements types have been declared.
1842 * Improvements to SB-SPROF:
1843 ** Support for allocation profiling
1844 ** Reduced profiling overhead, especially for long profiling runs
1845 * Improvements to the Windows port:
1846 ** floating point exceptions are now reported correctly.
1847 ** stack exhaustion detection works partially.
1848 ** more accurate GET-INTERNAL-REAL-TIME.
1849 ** better RUN-PROGRAM behaviour in case of errors in the child
1851 ** PROBE-FILE now simplifies pathnames correctly.
1852 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1853 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1854 1st 1970 (although time timezone data will be unreliable).
1855 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1857 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1858 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1859 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1861 * bug fix: two potential GC deadlocks affecting threaded builds.
1862 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1863 returns T (reported by Anton Kazennikov)
1864 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1865 with non-variable places
1866 * bug fix: remove a race condition in the setting of
1867 funcallable-instance functions, this should make threaded CLOS
1868 code more stable against memory faults.
1869 * bug fix: corruption of specials when unbinding is interrupted by an
1870 asynchronous unwind (reported by Hannu Koivisto)
1871 * improvement: the debugger will now also display local variables that
1872 are only used once, for code compiled with a DEBUG optimization quality
1875 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1876 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1877 * incompatible change: External-format support for FFI calls. The
1878 SB-ALIEN:C-STRING no longer implies an ASCII
1879 external-format. Instead the string is subject to external-format
1880 conversion. Additionally return values of type SB-ALIEN:C-STRING
1881 are by default of type (SIMPLE-ARRAY CHARACTER), not
1882 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1883 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1884 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1885 * incompatible change: SB-EXT package no longer contains the
1886 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1887 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1889 * incompatible change: the single-stepper is no longer available
1890 on Alpha, Mips and Sparc platforms.
1891 * minor incompatible change: the direct superclasses of
1892 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1893 not (STANDARD-OBJECT FUNCTION). This makes the
1894 class-precedence-lists of GENERIC-FUNCTION and
1895 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1897 * minor incompatible change: the default stream external format on
1898 non-unicode SBCL is no longer detected from the locale, but is always
1900 * new feature: Add a version of evaluator that uses an interpreter instead
1901 of the compiler. EVAL still uses the compiler by default, to switch it
1902 to use the interpreter, set the value of the variable
1903 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1904 * minor incompatible change: the single-stepper REPL has been merged
1905 with the normal debugger (see the "Stepping" heading of the debugger help
1906 for more details). The debugger command STEP will no longer switch
1907 to the single-stepper REPL.
1908 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1909 for a type now works.
1910 * bug fix: loading of default sysinit file works. (thanks to Leonid
1912 * bug fix: better detection of circularities in the file-compiler.
1913 (reported by Marco Monteiro)
1914 * bug fix: the CL pathname functions now work with files that have
1915 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1916 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1917 systems with Unix98 pty semantics.
1918 * bug fix: ASDF-INSTALL will now work with bsd tar.
1919 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1921 * bug fix: timers expiring in dead threads no longer cause a
1922 type-error (reported by Paul "Nonny Mouse").
1923 * bug fix: thanks to more lightweight single-stepper instrumentation,
1924 code compiled with (DEBUG 3) will compile and execute significantly faster,
1925 and will have more accurate type-inferencing than before
1926 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1927 whose bindings are modified
1928 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1929 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1930 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1931 CL:SOFTWARE-VERSION with proper version
1933 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1934 * feature: implemented the READER-METHOD-CLASS and
1935 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1936 as specified by AMOP.
1937 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1939 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1940 (thanks to Lutz Euler)
1941 * optimization: hashing of general arrays and vectors has been
1942 improved. (reported by Any Fingerhut)
1943 * enhancement: SB-INTROSPECT is now able to find definitions of
1944 profiled functions. (thanks to Troels Henriksen)
1945 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1946 as well, allowing compiler-macros for SETF-functions to expand.
1947 * enhancement: step-instrumentation no longer wraps known
1948 single-value functions with multiple-value context, allowing
1949 better type inference.
1950 * fixed bug #337: use of MAKE-METHOD in method combination now works
1951 even in the presence of user-defined method classes. (reported by
1952 Bruno Haible and Pascal Costanza)
1953 * fixed bug #339(c): if there are applicable methods not part of any
1954 long-form method-combination group, call INVALID-METHOD-ERROR.
1955 (reported by Bruno Haible)
1956 * fixed bug #361: the :FUNCTION initarg in the protocol for
1957 initialization of methods can now be used to override
1958 internally-produced optimized functions. (reported by Bruno
1960 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1961 system-provided lambda expression no longer cause warnings about
1962 unbound #:|pv-table| symbols.
1963 * bug fix: improved the handling of type declarations and the
1964 detection of violations for keyword arguments with non-constant
1966 * bug fix: potentially erronous calls to PATHNAME and
1967 MERGE-PATHNAMES were being flushed in some cases.
1968 (reported by Richard Kreuter)
1969 * bug fix: compiled calls to TYPEP were mishandling obsolete
1970 instances. (reported by James Bielman and Attila Lendvai)
1971 * bug fix: format strings with ~> without matching ~< no longer
1972 trigger an AVER, but signal an understandable error instead.
1973 (reported by Antonio Martinez)
1974 * bug fix: specifying an output-file without a pathname-type for
1975 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1976 of input-file instead of "fasl". (reported by Robert Dodier)
1977 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1978 (reported by James Y Knight).
1979 * bug fix: compiler-macros-function did not consider the environment
1980 argument for shadowing by local functions.
1981 * bug fix: compiler-macros expansion was inhibited by local INLINE
1983 * bug fix: inline expansions of known functions were subject to
1984 step-instrumentation in high debug policies, leading to problems
1985 with type-inference.
1986 * bug fix: compiler failed to differentiate between different CONS
1987 types in some cases.
1988 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1989 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1990 * bug fix: #368: incorrect use of expressed vs. upgraded array
1992 * bug fix: #306a: more precise unions of array types.
1993 * thread-safety improvements:
1994 ** CONDITION-WAIT could return early on Linux, if the thread was
1995 interrupted and subsequently continued with SIGCONT.
1996 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1998 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1999 * added support for the ucs-2 external format. (contributed by Ivan
2001 * minor incompatible change: pretty printing of objects of type
2002 (cons symbol) is, in the default pprint-dispatch-table, now
2003 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
2005 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
2006 called later in a class's lifetime, possibly as late as when the
2007 first instance of the class is created. Previously,
2008 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
2009 class became finalizeable.
2010 * fixed bug: FILE-POSITION sometimes returned inconsistent results
2011 for multibyte external-format streams. (thanks to "vbzoli")
2012 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
2013 with :ALLOCATION :CLASS inherited from superclasses of the
2015 * fixed bug: anonymous classes can now be created using the :NAME
2016 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
2017 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
2018 * fixed bug: core-files saved with :EXECUTABLE T can again be
2019 executed when SBCL_HOME isn't set. (reported by James Knight)
2020 * fixed bug: toplevel LOCALLY forms with declarations could
2021 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
2022 * fixed bug: printing from several different threads using different
2023 values of *print-case* could cause invalid output, due to
2024 some internal special variables of the printer not being bound
2025 thread-locally (reported by Max Mikhanosha)
2026 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
2027 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
2028 (reported by Pascal Costanza)
2029 * fixed bug: FINALIZE-INHERITANCE is called from
2030 REINITIALIZE-INSTANCE on classes when the class has previously
2031 been finalized, as required by AMOP.
2032 * minor code generation optimizations:
2033 ** better register allocation in CLOS dispatching functions
2034 ** overflow detection when coercing signed bytes to fixnums on x86-64
2035 ** is now implemented with one IMUL instruction instead of three shifts
2036 ** more efficient bit-vector access on x86 and x86-64
2037 ** more efficient access to raw structure slots on x86 and x86-64
2038 * fixed some bugs revealed by Paul Dietz' test suite:
2039 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
2040 return its argument.
2042 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
2043 * feature: thread support on Solaris/x86, and experimental thread support
2045 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
2047 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
2048 default method for SLOT-UNBOUND.
2049 * minor incompatible change: prevent the user from specializing the
2050 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
2051 somewhat counter to the intent of the protocol, I (CSR) think, and
2052 additionally it just doesn't work in SBCL as currently
2053 implemented, thanks to optimizations (that are always valid for
2054 the other three SLOT-VALUEish functions, but not for the setter).
2055 * minor incompatible change: the :SB-LDB feature is now enabled by
2056 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
2057 the low-level debugger.
2058 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
2059 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
2060 down to an SB-SYS:FD-STREAM, allowing direct communication in
2061 more cases. Temporary files and pipes are still used as a fallback
2063 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
2064 on the non-reentrant C functions localtime(3) and gmtime(3).
2065 * bug fix: global optimization policy was not visible in LOCALLY and
2067 * bug fix: class objects can be used as specializers in methods.
2068 (reported by Pascal Costanza)
2069 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
2070 with a type error. (reported by blitz_ on #lisp)
2071 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
2072 failed with a type error. (reported by Pascal Bourguignon)
2073 * bug fix: merging pathnames against defaults with :DIRECTORY
2074 starting with '(:RELATIVE :BACK) should preserve the :BACK.
2075 (reported by James Y Knight)
2076 * bug fix: saving large (>2GB) cores on x86-64 now works
2077 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
2078 constant index and a (simple-array (signed-byte 32)) array
2079 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
2080 error (patch by Robert J. Macomber)
2081 * feature: TIME now displays the amount of run-time spent in GC
2082 * bug fix: The debugger now does a better job of respecting
2083 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
2084 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
2085 workaround for bug 403.)
2086 * bug fix: floating point exception handling now works on FreeBSD
2087 (thanks to NIIMI Satoshi)
2088 * fixed some bugs revealed by Paul Dietz' test suite:
2089 ** MISC.641: LET-conversion were not supposed to work in late
2091 * improvements to the Win32/x86 port:
2092 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
2093 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
2095 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
2096 * new feature: source path information is generated for macro-expansion
2097 errors for use in IDE's like Slime (thanks to Helmut Eller)
2098 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
2099 * bug fix: compiler does not loop forever on an invalid type in
2101 * improvement: compilation of most CLOS applications is significantly
2103 * optimization: added a limited bytecode compiler for simple toplevel
2104 forms, speeding up compilation and FASL loading
2105 * bug fix: the statistical profiler now properly distinguishes anonymous
2108 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
2109 * minor incompatible change: in sbcl-0.9.11 (but not earlier
2110 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
2111 into subclasses of the finalized class. Now user calls to
2112 FINALIZE-INHERITANCE finalize just the one class, and calls by the
2113 system return before any subclasses are finalized.
2114 * minor incompatible change: The reader no longer ignores errors
2115 regarding non-existent packages in #+ and #- feature tests.
2116 * new feature: command line options --no-sysinit, --no-userinit to
2117 inhibit loading the corresponding init files
2118 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
2119 for sending data through UDP sockets (thanks to François-René Rideau)
2120 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
2121 error is signalled instead (thanks to François-René Rideau)
2122 * minor incompatible change: Error signalling behaviour of lexical
2123 operations violating package locks has changed slightly. Refer to
2124 documentation on package locks for details.
2125 * enhancement: EVAL can process IF-expressions without resorting to the
2127 * bug fix: Some operations involving SIN, COS, or TAN weren't being
2128 constant-folded properly due to missing out-of-line functions.
2129 (reported by Mika Pihlajamäki)
2130 * bug fix: LISTEN sometimes returned T even in cases where no data was
2131 immediately available from the stream
2132 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
2133 were reversed. (reported by Levente Mészáros)
2134 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
2135 when given a vector displaced to an adjustable array. (reported
2137 * bug fix: derivation of float boundaries from numbers outside the
2138 appropriate float range (reported by John Wiseman)
2139 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
2141 * bug fix: precomputing cache entries for generic functions with
2142 some subclasses of specializers as yet invalid does not attempt to
2143 fill a cache line with a negative offset. (reported by Levente
2145 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
2146 allow condition class objects as arguments to DOCUMENTATION and
2147 (SETF DOCUMENTATION); only find and set documentation for
2148 structure names for the STRUCTURE doc-type. (suggested by Gary
2150 * improvements to the Win32/x86 port:
2151 ** (user-homedir-pathname) and default initialization file
2152 locations now know about the user's "Documents and Settings"
2153 directory (thanks to Yaroslav Kavenchuk)
2154 ** run-program is implemented (thanks to Mike Thomas)
2155 ** sockets support (thanks to Timothy Ritchey)
2156 ** better backtrace support (thanks to Alastair Bridgewater)
2157 ** sb-grovel supported
2158 ** asdf-install and sb-posix work somewhat
2159 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
2160 * improvements to the Solaris/x86 port:
2161 ** works on Solaris 11/Solaris Express
2162 ** floating-point exception handling support
2163 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
2164 * fixed some bugs revealed by Paul Dietz' test suite:
2165 ** REMOVE-METHOD returns its generic function argument even when
2166 the method is not one of the generic functions' methods.
2167 ** objects declared as MEMBER types can be admissible arguments to
2168 structure accessors.
2169 ** printing characters should simply be printed by the FORMAT ~:C
2171 ** compiler failure when compiling functions with hairy constant
2172 defaults for optional parameters.
2173 ** compiler produces wrong code when MAYBE-INLINE-expanding a
2174 function, which is already optimized.
2176 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
2177 * new platform: experimental support for SBCL x86/Darwin, including
2178 MacOS X 10.4.5 on Intel.
2179 * new feature: Unicode character names are now known to the system
2180 (through CHAR-NAME and NAME-CHAR).
2181 * new feature: the filesystem location of SBCL's core file is
2182 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
2183 * minor incompatible change: the contrib modules SB-POSIX and
2184 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
2185 this change is to make it easier to distribute
2186 location-independent binaries.
2187 * bug fix: as implied by AMOP, standardized classes no longer have
2188 slots named by external symbols of public packages. (reported by
2190 * optimization: calling functions via constant symbols -- as in
2191 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
2192 via the function object as in (FUNCALL #'FOO).
2193 * optimization: on x86 and x86-64, the calling convention for the
2194 case of dealing with an unknown number of values has been altered
2195 to be friendlier to the prediction heuristics implemented,
2196 particularly with reference to CALL and RET pairing. (thanks to
2197 Alastair Bridgewater)
2198 * optimization: on x86, the code for access to thread-local symbol
2199 values and binding/unbinding of thread-local symbols is smaller.
2200 (thanks to Alastair Bridgewater)
2201 * enhancement: CONSTANTP is now able to determine constantness of
2202 more complex forms, including calls to constant-foldable standardized
2203 functions and some special forms beyond QUOTE.
2204 * fixed bug: occasional GC crashes on Solaris/x86
2205 * optimization: x86-64 supports stack allocation of results of simple
2206 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
2207 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
2208 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
2209 (thanks to James Knight)
2210 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
2211 by the standard (thanks to Stephen Compall)
2213 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
2214 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
2215 be used for bundling the runtime and the core file into one
2216 executable binary. This feature is not currently supported on all SBCL
2217 platforms. (thanks to James Bielman and NIIMI Satoshi)
2218 * new feature: a generational or ephemeral garbage collector is now
2219 the default on the PowerPC platform (both Linux and Darwin). The
2220 old Cheney (stop and copy) collector is a build-time option.
2221 (thanks to Cyrus Harmon, after Raymond Toy)
2222 * minor incompatible change: the method by which SBCL finds its
2223 contributed modules has changed; it no longer relies on symbolic
2224 links from an $SBCL_HOME/systems directory, but searches directly
2225 in the subdirectories of $SBCL_HOME.
2226 * enhancement: the dynamic heap size on the Linux/PPC platform is
2227 markedly larger, even using the older Cheney garbage collector.
2228 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
2229 certain complicated string types. (reported by Gary King)
2230 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
2231 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
2232 * fixed bug: DOCUMENTATION on structures no longer signals an
2233 error if no structure type of the right name exists. (reported by
2235 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
2236 applicable non-standard primary or :AROUND method on
2237 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
2238 no longer cause unbound variable errors. (reported by Kevin Reid)
2239 * fixed bug: metacircle resolution in cases where methods have slots
2240 added before the slots from STANDARD-METHOD. (reported by Jean
2242 * fixed bug: the Power PC assembly code for calling into lisp
2243 sometimes computed its return address wrongly (depending on the
2244 15th bit of the address, fixed at link time). This used to
2245 manifest itself in a segmentation violation while building PCL.
2246 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
2247 many others over the years)
2248 * fixed bug: ROOM no longer reports silly numbers for stack usage if
2249 the stack pointer (treated as a signed integer) is negative.
2250 (thanks to Peter van Eynde)
2252 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
2253 * new platform: experimental support for the Windows operating
2254 system has been added. (thanks to Alastair Bridgewater)
2255 * fixed several bugs in and robustified the PPC FFI (including
2256 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
2257 * bug fix: allow non-simple string symbol names (reported by Paul
2259 * bug fix: interrupt handling on NetBSD (thanks to Richard M
2261 * bug fix: saving a core corrupted callbacks on x86/x86-64
2262 * bug fix: closed a loophole in metacircularity detection and
2263 grounding in the PCL implementation of CLOS.
2264 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
2265 (reported by tomppa on #lisp)
2266 * bug fix: clear the direction flag on Lisp -> C transitions, as
2267 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
2268 (reported by Andrej Grozin and Hendrik Maryns)
2269 * optimization: major improvements to GC efficiency on GENCGC platforms
2270 * optimization: faster implementation of EQUAL
2271 * optimization: emit more efficient opcodes for some common
2272 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
2273 * optimization: several other minor code-generation improvements on x86-64
2274 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
2276 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
2277 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2278 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
2279 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
2280 by ANSI as a generic function, and for consistency (SETF
2281 GENERIC-FUNCTION-NAME) is treated likewise.
2282 * fixed bug #233.b: make constraint propagation notice when a variable
2283 value is changed after it is referenced but before it is used
2284 * fixed bug #296: no more arbitrary behaviour from filenames with
2285 odd characters as --load arguments. (reported by Adam Warner)
2286 * fixed bug #390: :CHARACTER-SET pathname components now work as
2287 expected. (reported by Tim Daly Jr)
2288 * fixed bug #391: complicated :TYPE intersections in slot
2289 definitions no longer cause an error in PCL internals.
2290 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
2291 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
2292 returning the number of octets which would be written to the
2293 file-stream. (thanks to Robert J. Macomber)
2294 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
2295 arguments to the internal stream functions. (thanks to David
2297 * bug fix: stack exhaustion is now handled on the x86/SunOS
2298 platform. (thanks to Daisuke Homma)
2299 * bug fix: more accurate ROOM results on GENCGC platforms
2300 * optimization: improved type inference for arithmetic-for
2301 index variables in LOOP
2302 * optimization: faster floating-point SQRT on x86-64
2303 * fixed some bugs revealed by Paul Dietz' test suite:
2304 ** DOCUMENTATION returns NIL instead of "" for method combinations
2305 that don't have a docstring
2307 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
2308 * minor incompatible change: (SETF CLASS-NAME) and (SETF
2309 GENERIC-FUNCTION-NAME) are no longer generic functions, and
2310 therefore are not customizeable by user code (as seems to be at
2311 least permitted and maybe required by AMOP). As a consolation,
2312 however, the SBCL implementation of these functions now calls
2313 REINITIALIZE-INSTANCE as specified by AMOP.
2314 * bug fix: slot-definition documentation is propagated as per ANSI
2315 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
2316 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
2317 argument, as do eslotd initialization methods. (from Pascal
2318 Costanza's "Closer" project)
2319 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
2320 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
2322 * bug fix: it is now possible to have more than one subclass of
2323 STANDARD-GENERIC-FUNCTION without causing stack overflow.
2324 (reported by Bruno Haible, Pascal Costanza and others)
2325 * bug fix: the dependent update protocol now works for generic
2326 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
2327 and Pascal Costanza)
2328 * bug fix: condition-class instances corresponding to
2329 DEFINE-CONDITION forms are now created eagerly. (reported by
2330 Kalle Olavi Niemitalo on comp.lang.lisp)
2331 * bug fix: floating point printing is more accurate in some
2332 circumstances. (thanks to Simon Alexander)
2333 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
2334 merged with *DEFAULT-PATHNAME-DEFAULTS*.
2335 * bug fix: callbacks on OS X now preserve stack-alignment.
2336 (thanks to Cyrus Harmon)
2337 * enhancement: the x86-64 disassembler is much better at
2338 disassembling SSE instructions. (thanks to Lutz Euler)
2339 * enhancement: CHECK-TYPE on a variable now allows type-inference
2340 (thanks to Vincent Arkesteijn)
2341 * optimization: improved performance of EUC-JP external format.
2342 (thanks to NIIMI Satoshi)
2343 * optimization: performance improvements to IO on file streams of
2344 :ELEMENT-TYPE CHARACTER
2345 * optimization: much faster memory allocation on x86-64
2346 * optimization: faster garbage collections (latency and throughput)
2348 * optimization: faster bignum subtraction and division on x86 and x86-64
2349 (thanks to Lutz Euler)
2350 * optimization: more accurate type-inference for loops that use a
2351 floating point index variable or a negative step.
2353 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
2354 * bug fix: add a workaround to SBCL looping infinitely at startup on
2355 Linux kernels with apparently buggy implementations of personality().
2356 (thanks to Svein Ove Aas)
2357 * bug fix: Unicode symbols are correctly printed in LDB backtraces
2358 (thanks to David Lichteblau)
2359 * bug fix: local bindings shadow global symbol macros for
2360 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
2361 * optimization: non-open coded uses of numeric comparison operators
2362 (e.g. >) no longer cons when called with more than one parameter
2363 on platforms supporting dynamic-extent allocation.
2364 * enhancement: saving cores with foreign code loaded is now supported
2365 on MIPS/Linux in addition to the previously supported platforms.
2366 * bug fix: FIND-RESTART now tests for activity, not applicability when given
2367 a restart object as identifier. (reported by Helmut Eller for CMUCL)
2368 * bug fix: division by zero in sb-sprof when no samples were collected
2369 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
2370 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
2371 (thanks to Alexander Kjeldaas)
2372 * new feature: ignoring the return values of destructive functions
2373 like NREVERSE signals a compile-time style-warning.
2374 (thanks to Kevin Reid)
2375 * new feature: the alignment of alien structure fields can be
2376 explicitly specified. (thanks to Cyrus Harmon)
2377 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
2378 and dump core on SIGQUIT
2380 ** incompatible change: threads do not inherit values of specials
2381 from their parents (see manual)
2382 ** bug fix: threads stacks belonging to dead threads are freed by the
2383 next exiting thread, no need to gc to collect thread stacks anymore
2384 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
2385 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
2386 ** bug fix: dynamic variable and thread start related gc lossage
2387 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
2389 * fixed some bugs revealed by Paul Dietz' test suite:
2390 ** SUBTYPEP is slightly more accurate on heinously complicated
2391 CONS types where some of the members have uncertain (in the
2392 NIL, NIL sense) type relationships to each other.
2394 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
2395 no longer purified unless :PURIFY T is explicitly specified.
2396 ** Non-purified cores are significantly smaller than before
2398 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
2399 * new feature: timers based on Zach Beane's excellent timer package
2400 * added support for the following external formats: koi8-u,
2401 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
2402 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
2403 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
2404 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
2405 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
2406 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
2407 * incompatible change: a threaded SBCL will no longer revert to
2408 non-threaded mode on non-NPTL systems, but refuse to start entirely.
2409 * bug fix: interrupts are disabled until startup is complete; no
2410 more sigsegvs when receiving a signal to soon
2411 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
2413 * bug fix: add a workaround for the memory randomization features in
2414 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
2415 workaround will only be in effect on systems with the proc filesystem
2417 * bug fix: printing objects of type HASH-TABLE signals a
2418 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
2420 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
2421 have been running for over 50 days. (reported by Gilbert Baumann)
2422 * bug fix: the logic for getting names of functions gets less
2423 confused when confronded with alternate-metaclass
2424 funcallable-instances. (reported by Cyrus Harmon)
2425 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
2426 consistent, even on internal alternate-metaclass objects.
2427 * bug fix: flush closure information collected by physical
2428 environment analysis prepass before the main pass. (bug reported
2430 * bug fix: compiler pack phase does not modify a hashtable, which is
2431 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
2432 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
2433 may be expanded. (reported by Alexander <malishev> on c.l.l)
2434 * bug fix: no more style-warnings when compiling code using LAST
2435 under high-SPEED low-SPACE settings. (reported by David Wallin
2437 * fixed some incompatibilities between SBCL's MOP and the MOP
2439 ** the METAOBJECT class is now implemented;
2440 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
2441 STANDARD-OBJECT, as required;
2442 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
2443 now compatible (as required by VALIDATE-SUPERCLASS); there
2444 remains a consistency requirement over the presence or absence
2445 of the FUNCTION class in the superclass list of finalized
2446 classes; see the manual for more details;
2447 ** the :AROUND method for COMPUTE-SLOTS on
2448 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
2449 requested slot ordering.
2451 ** bug fix: parent thread now can be gc'ed even with a live
2453 ** bug fix: binding a special with PROGV to no value is not
2454 the same as that symbol not having been bound (thanks to
2456 ** bug fix: binding specials is thread safe (thanks to
2458 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2459 and SB-SPROF do not die with 'no handler for signal XX in
2460 interrupt_handle_now(..)' anymore
2461 ** bug fix: WITH-TIMEOUT works with multiple running threads
2462 * fixed some bugs revealed by Paul Dietz' test suite:
2463 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2464 the :method-class keyword argument.
2466 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2467 * new port: the Solaris operating system on x86 processors is now
2468 mostly supported, though some rough edges in the environment
2469 remain. (thanks to Daisuke Homma)
2470 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2471 space for its heap. (thanks to Thiemo Seufer)
2472 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2473 closures. (thanks to Thiemo Seufer)
2474 * minor incompatible change: eof selects abort in the debugger.
2475 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2476 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2478 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2479 deprecated, and will go away in a future revision of SBCL.
2480 * minor incompatible change: GC-ON and GC-OFF are no longer
2481 implemented with a counter, it does not matter how many times gc
2482 is switched on or off
2483 * bug fix: discriminating functions for generic function classes
2484 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2485 make invalid assumptions about method precedence order. (reported
2487 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2488 platforms. (thanks to Thiemo Seufer)
2489 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2490 * bug fix: correct pathname printing with printer escaping is on.
2491 (thanks to Kevin Reid)
2492 * bug fix: complex VOP definitions in "user-space" no longer trigger
2493 package locks. (reported by Zach Beane)
2494 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2495 for funcallable-instance functions, and is no different from
2497 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2498 characters in the current readtable. (reported by Nicholas Neuss)
2499 * bug fix: SUBTYPEP on various CONS types returns more a more
2500 accurate acknowledgment of its certainty.
2501 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2502 lists in some cases. This partially fixes bug 384.
2503 * flush all standard streams before prompting in the REPL and the
2505 * bug fix: signal handling and triggering gc do not conflict
2506 directly anymore, in particular a high frequency sb-sprof does
2507 not prevent gc from running
2508 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2509 approximation for timezone and DST information between the
2510 universal time epoch and the smallest negative 32-bit time_t.
2511 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2512 year 1899 so long as the encoded time is non-negative.
2513 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2514 the correct answer for non-constant rotate amounts when performing
2515 an inline 32-bit rotation.
2517 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2518 there is only one thread in the session
2519 ** bug fix: memory leak for streams created in one thread and
2520 written to in another
2521 ** bug fix: lockup when compiled with gcc4
2522 ** bug fix: race that allows the gc to be triggered when gc is
2524 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2525 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2527 ** bug fix: finished threads are gc'ed properly
2528 * fixed some bugs revealed by Paul Dietz' test suite:
2529 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2530 has arguments with a different set of applicable methods from
2531 the orignal arguments.
2532 ** The type error thrown by MAP now has a correct expected-type
2534 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2535 name a compiled function.
2536 ** Three MISC tests where a large bignum was improperly coerced to
2537 a float that couldn't represent that bignum during type
2538 derivation were fixed.
2539 ** SUBTYPEP can now handle types involving the negation of a
2540 list-form FUNCTION type.
2541 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2542 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2543 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2545 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2546 * New feature: Experimental support for bivalent streams: streams
2547 opened with :element-type :default now allow character and binary
2548 (unsigned-byte 8) I/O
2549 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2550 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2552 * bug fix: no more highly sporadic "couldn't check whether ~S is
2553 readable" when reading a stream and an interrupt hits in the middle
2554 of a select system call
2555 * compiler better recognizes complex arrays (reported by Eduardo
2557 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2558 for variables on SBCL built with linkage-tables. (reported by Luis
2560 * various error reporting improvements.
2561 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2562 (Thanks to Thiemo Seufer)
2563 * bug fix: nested reader invokations work correctly
2564 * bug fix: it is possible to have simultaneous references to foreign
2565 code and foreign data with the same name.
2567 ** added x86-64 support
2568 ** incompatible change: the threading api now works with thread
2569 objects instead of thread ids
2570 ** bug fix: threads are protected from signals and interruption when
2571 starting up or going down
2572 ** bug fix: a race where an exiting thread could lose its stack to gc
2573 ** bug fix: don't halt on infinite error in threads if possible
2574 ** fixed numerous gc deadlocks introduced in the pthread merge
2575 ** bug fix: fixed thread safety issues in read and print
2576 ** bug fix: debugger doesn't hang on session lock if interrupted at
2577 an inappropriate moment
2578 ** bug fix: run-program is now thread safe(r)
2579 ** bug fix: inner with-recursive-lock no longer releases the mutex
2580 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2581 * fixed some bugs revealed by Paul Dietz' test suite:
2582 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2583 EXPECTED-TYPE slots filled.
2584 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2586 ** MAKE-CONDITION accepts classes as type-designators.
2587 ** COMPILE may never return NIL.
2588 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2589 range before calling Unix time functions
2591 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2592 * numerous signal handling fixes to increase stability
2593 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2594 * minor incompatible change: we now correctly canonize default
2595 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2596 as per the MOP, rather than the historical (INITARG INITFUNCTION
2597 INITFORM). (reported by Bruno Haible)
2598 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2599 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2600 for more information.
2601 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2602 pathname is a directory pathname.
2603 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2604 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2606 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2607 :METACLASS argument in addition to a class name. (reported by
2608 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2609 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2610 (reported by Bruno Haible; patch from Gerd Moellmann)
2611 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2613 * bug fix: more cleanups to the floating point exception handling on
2614 x86-64 (thanks to James Knight)
2615 * bug fix: the compiler does not try to constant fold calls of
2616 COERCE and BIT-* functions when they return freshly constructed
2617 objects. (reported by Nikodemus Siivola and Paul Dietz)
2618 * optimization: improved the MIPS versions of generic (in the
2619 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2620 * optimization: direct conversion of (unsigned-byte 32) to floats on
2621 the PowerPC platform.
2622 * optimization: structure instances with raw slots now use less
2623 memory, and probably show better memory locality. (thanks to
2625 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2626 are treated as requests for stack allocation on the x86-64,
2627 Alpha-32, PPC and SPARC platforms.
2628 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2629 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2630 (thanks to Tony Martinez)
2632 ** gcing a dead thread can no longer lead to lockups
2633 ** threads block signals until they are set up properly
2634 ** errno is no longer shared by threads
2635 ** interrupt-thread restores the eflags register on x86
2636 ** fixed some lockups due to gc/thread interaction
2637 * fixed some bugs revealed by Paul Dietz' test suite:
2638 ** invalid dotted lists no longer raise a read error when
2639 *READ-SUPPRESS* is T
2640 ** signal an error if a symbol that names a declaration is used
2641 as the name of a type, or vice versa
2642 ** allow using the (declare (typespec var*)) abbreviation for
2643 (declare (type typespec var*)) with all type specifiers
2644 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2645 ** always return NIL from PPRINT-POP when OBJECT is NIL
2646 ** don't signal errors when pretty-printing malformed LABELS,
2647 FLET or MACROLET forms
2648 ** declarations in a DOLIST body are also in scope for the
2650 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2652 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2655 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2656 * fixed cross-compiler leakages that prevented building a 32-bit
2657 target with a 64-bit host compiler.
2658 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2659 opened with :IF-EXISTS :OVERWRITE.
2660 * fixed bug 281: error for an invalid qualifier in a short-form method
2661 combination method is not signalled until the faulty method is called.
2662 * bug fix: iteration variable type inferrer failed to deal with open
2663 intervals. (reported by Alan Shields)
2664 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2665 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2666 or more runtime options were provided to the sbcl binary.
2667 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2668 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2669 * optimization: there's now a fast-path for fixnum arguments in the
2670 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2671 * optimization: the code generated on x86-64 is more compact thanks
2672 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2673 * bug fix: floating-point exception handling now partly works on
2674 x86-64. (Thanks to James Knight)
2675 * improvement to the MIPS backend from Thiemo Seufer: C-style
2676 64-bit long long arguments and return values to alien functions
2678 * fixed some bugs revealed by Paul Dietz' test suite:
2679 ** the type-error signalled from WARN has a filled-in DATUM slot.
2680 ** the type-error required when a stream is not associated with
2681 a file has the stream as its datum.
2682 ** type-errors on single-floats on x86-64 no longer have
2683 :INVALID-OBJECT as the datum
2684 ** the type-errors signalled for invalid function names now have
2685 a correct expected type
2686 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2687 for structures defined with a :TYPE. Documentation strings for
2688 typed structures are no longer immediately discarded
2689 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2690 broadcast streams and synonym streams. FILE-LENGTH now also works
2691 on broadcast streams.
2693 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2694 * incompatible change: the --noprogrammer option, deprecated since
2695 version 0.7.5, has been removed. Please use the equivalent
2696 --disable-debugger option instead.
2697 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2699 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2700 inoperational for a while now) has been completely removed.
2701 * null lexical environments are now printed as #<NULL-LEXENV>,
2702 significantly reducing the amount of clutter in typical backtraces.
2703 * documentation on weak pointers, finalization, and after GC hooks
2704 has been added to the manual.
2705 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2706 as other specialized array types, is much faster. SUBSEQ and
2707 COPY-SEQ on such arrays have also been sped up.
2708 * optimization: EQL is now more efficient when at least other argument
2709 is known to be of type (OR FIXNUM (NOT NUMBER)).
2710 * fixed bug: the runtime is now less vulnerable to changes in the
2711 size of the SBCL object on OS X, and virtual memory is reserved for
2712 all spaces that need to be at a fixed address.
2713 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2714 * fixed bug: finalizers and after GC hooks that cause consing are now
2716 * fixed bug: compiler error messages and summaries are now printed to
2717 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2718 * fixed inference of the upper bound of an iteration variable.
2719 (reported by Rajat Datta).
2720 * fixed bug 211e: calling local functions with duplicated constant
2721 keyword argument no longer causes a bogus style warning about an
2723 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2724 ftype declaration to be disregarded. (reported by Dave Roberts)
2725 * fixed bug 373: caused by erronous compilation of references to alien
2726 variables in the runtime on ppc/darwin.
2727 * fixed bug 376: CONJUGATE type deriver.
2728 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2729 (reported by Baughn on #lisp)
2730 * a cross-compiler bug on non-x86 platforms has been identified and
2731 fixed. (thanks to Bruno Haible)
2732 * improvements to the MIPS runtime code for increased stability.
2733 (thanks to Thiemo Seufer)
2734 * increased the maximimum compact environment size to allow
2735 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2736 * partial workaround for bug 135: don't name the function we're
2737 calling for hairy cases of EVAL, so as not to accumulate one environment
2738 entry per call to EVAL. (reported by Kevin Reid)
2739 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2740 * optimization: type testing for non-vector arrays should be faster.
2741 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2743 * bug fix: setting 31st element of a bit vector to zero did not work
2745 * bug fix: redefining a class definition which failed due to a
2746 previous accessor / function clash now works (but see BUGS entry
2747 #380 for more problems in this area). (thanks to Zach Beane)
2748 * the long form of DEFINE-METHOD-COMBINATION disables method group
2749 checking when given a single method group with pattern *. (thanks
2751 * on x86 compiler supports stack allocation of results of simple
2752 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2753 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2754 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2755 * fixed some bugs related to Unicode integration:
2756 ** the restarts for recovering from input and output encoding
2757 errors only appear when there is in fact such an error to
2759 * fixed some bugs revealed by Paul Dietz' test suite:
2760 ** MISC.549 and similar: late transformation of unsafe type
2761 assertions into derived types caused unexpected code
2763 ** SCALE-FLOAT type deriver is less wrong.
2764 ** type derivers for EXP, LOG and similar functions compute result
2765 types for complex arguments better.
2766 ** (MISC.563) CONJUGATE type deriver works for very restricted
2768 ** out-of-line type testers for character strings are available.
2769 ** EQUAL compiler transform understands specialness of objects
2771 ** accessing double-floats stored on the stack now works on x86-64.
2772 ** debugger internals could sometimes create invalid lispobjs,
2773 resulting in GC crashes.
2774 ** MISC.548: type check weakening can convert required type into
2776 ** initialization forms for bindings are not in scope of free special
2779 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2780 * incompatible change: thread support for non-NPTL systems has
2781 been removed - locking is buggy and unreliable. A threaded
2782 SBCL build will now warn at startup and refuse to create
2783 new threads, unless futex support is detected in the kernel
2784 * incompatible change: the top level REPL now has only an ABORT
2785 restart associated with it, not TOPLEVEL and ABORT as it used to.
2786 TOP and TOPLEVEL are now available as debugger commands for
2787 returning to the top level.
2788 * incompatible change: forms evaluated in the REPL now use the
2789 global optimization policy.
2790 * incompatible change: user- and system-initialization files are
2791 no longer processed with LOAD, but by READ and EVAL; hence the
2792 global optimization policy, startup package, readtable, etc,
2794 * The .fasl file format number has been incremented because of
2795 various incompatible changes.
2796 * internal entry point details and argument counts no longer appear
2797 in backtraces unless explicitly requested by setting
2798 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2799 * built-in and standard functions no longer have names like "top
2800 level local call to FOO".
2801 * fixed bug 32: functions defined in non-null lexical environments
2802 now have more legible printed representation
2803 * fixed bug 33: functions defined in non-null lexical environemnts
2804 are now more amenable to inspection by INSPECT.
2805 * workaround for bug 354: XEPs no longer appear in backtraces unless
2806 explicitly requested.
2807 * fixed bug: receiving the signal which results from attempting to
2808 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2809 SIGBUS on other *BSDs) on architectures where the C stack is also
2810 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2811 to debugger confusion or wild instability. (reported by Cheuksan
2813 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2814 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2815 (reported by Lutz Euler)
2816 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2817 compiled code. (reported by Paul Dietz)
2818 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2819 specialized parameter to a method to something that is not TYPEP
2820 the specializer is now possible.
2821 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2822 face of package deletion.
2823 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2824 pathname. (reported by David Tolpin on c.l.l)
2825 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2826 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2827 STRING-STREAM and FILE-STREAM, respectively.
2828 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2829 than previously; in addition, its test suite is now run on build.
2830 (thanks to Luke Gorrie)
2831 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2832 * optimization: added a immediate representation for single-floats
2834 * fixed some bugs revealed by Paul Dietz' test suite:
2835 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2836 ** attempting to create a package with a colliding nickname causes
2837 correctable errors to be signalled.
2838 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2839 ** several x86-64 backend bugs related to sign-extension of immediate
2842 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2843 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2844 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2846 * fixed loading of multiply forward-referenced layouts.
2847 (thanks to Cheuksan Wang)
2848 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2849 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2850 (see COMPILE-FILE documentation for details of :PRINT option)
2851 * fixed bugs 19 and 317: fixed-format floating point printing is
2852 more accurate. This also fixes a bug reported by Adam Warner
2853 related to the ~@F format directive.
2854 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2856 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2857 dispatch table if the from-char is a dispatch macro character.
2858 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2859 by the wordsize no longer ignore the last word. (reported by Lutz
2861 * fixed bug in type checking of dynamic-extent variables. (reported
2863 * optimization: sequence traversal functions use their freedom to
2864 coerce function designators to functions.
2865 * optimization: code with many calls to CLOS methods specialized on
2866 CLOS classes has had redundant type checks removed.
2867 * optimization: added declarations to speed up operations that access
2868 the internal character database (for example STRING-UPCASE)
2869 * optimization: comparison operations between floats and sufficiently small
2870 fixnums no longer create extra rationals
2871 * fixed some bugs related to Unicode integration:
2872 ** portions of multibyte characters at the end of buffers for
2873 character-based file input are correctly transferred to the
2874 start of the buffer at the next read.
2875 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2876 passing it through to OPEN.
2877 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2878 argument given to internal calls to OPEN.
2879 ** the built-in comment readers (introduced by character sequences
2880 ";" and "#|") are more forgiving to encoding errors; they will
2881 STYLE-WARN and then attempt to resync the stream at a character
2882 boundary. (thanks to Teemu Kalvas)
2883 * fixed some bugs in the x86-64 port:
2884 ** Negative short int return values from c-calls are sign-extended
2886 ** The stack is aligned to 16-bytes for c-calls, as required by
2887 the ABI. (thanks to Cheuksan Wang)
2888 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2889 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2890 for enums. (thanks to Vincent Arkesteijn)
2891 ** Multiple small optimizations and bugfixes for floating point
2893 * fixed some bugs revealed by Paul Dietz' test suite:
2894 ** Space, Tab, Linefeed, Return and Page have the invalid
2895 secondary constituent character trait.
2896 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2898 ** WITH-INPUT-FROM-STRING should only update the index place on
2900 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2901 works more reliably.
2902 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2903 with one-dimensional arrays with fill pointers.
2904 ** TYPE-OF failed on a complex with an integer realpart and a
2906 ** compiler failure during type inference for the code of form
2907 (IF (EQL X (THE ...)) ...) (MISC.535).
2909 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2910 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2911 platform. The port supports 61-bit fixnums, large memory spaces
2912 and reloading shared object files.
2913 * enhancement: saving cores with foreign code loaded is now
2914 supported on ppc/Darwin in addition to the previously supported
2916 * enhancement: the statistical profiler now walks deeper into the
2917 call stack for more meaningful call-graphs and accrued time
2918 reports (x86/x86-64 only). It also now reports time spent in
2920 * enhancement: it is now possible to trace most individual methods
2921 of a generic function in addition to tracing the generic function
2923 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2925 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2926 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2927 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2928 produces an error. (thanks to Vincent Arkesteijn)
2929 * bug fix: NAMESTRING on pathnames with :WILD components in their
2930 directories works correctly. (thanks to Artem V. Andreev)
2931 * fixed bug 125: compiler preserves identity of closures. (reported
2933 * bug fixed: functions with &REST arguments sometimes failed with
2934 "Undefined function" when compiled with (DEBUG 3). (reported by
2936 * bug fix: overflow during compiling of setting element of a bit
2937 vector with constant index and value. (reported by Timmy Douglas)
2938 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2939 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2940 * on x86 compiler partially supports stack allocation of dynamic-extent
2942 * GO and RETURN-FROM do not check the extent of their exit points
2943 when compiled with SAFETY 0.
2944 * fixed some bugs related to Unicode integration:
2945 ** encoding and decoding errors are now much more robustly
2946 handled; it should now be possible to recover even from invalid
2947 input or output to the terminal. (thanks to Teemu Kalvas)
2948 ** provided a first cut at implementing STRING-TO-OCTETS and
2949 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2950 ** altered the SB-MD5 contributed module slightly, changing the
2951 interface just enough for it to be supportable for builds where
2952 lisp characters are not eight bits.
2953 * fixed some bugs revealed by Paul Dietz' test suite:
2954 ** the FORMATTER-generated functions for ~V[ conditionals require
2955 the correct number of arguments.
2956 ** READ-FROM-STRING returns the mandated second value when applied
2957 to displaced strings.
2958 ** the #\Rubout and #\Backspace characters are treated as invalid
2959 constituent characters by the tokenizer.
2961 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2962 * new feature: reloading changed shared object files with
2963 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2964 * new feature: references to foreign variables and functions
2965 can now be compiled and loaded before the corresponding shared
2966 object file is loaded, as long as the foreign definitions are
2967 available at runtime.
2968 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2969 supported. (thanks to Dan Debertin)
2970 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2971 just keywords. (thanks to Vincent Arkesteijn)
2972 * fixed bug #331: structure-class instances corresponding to
2973 DEFSTRUCT forms are now created eagerly.
2974 * fixed bug #345: backtraces from calls to undefined functions work
2975 on x86 as well. Related bug #61 is now also partially fixed on x86
2976 (backtraces from throws to unknown catch tags.)
2977 * bug fix: lambda-list parsing is now stricter vrt. order and number
2978 of lambda-list keywords.
2979 * bug fix: as specified by AMOP, an error is signalled if a
2980 class-option appears multiple times in a DEFCLASS form. (reported
2982 * bug fix: RANDOM can be compiled when the compiler derives the type
2983 of its numeric argument as a disjoint set of small integers.
2984 (reported by Paul Dietz)
2985 * bug fix: starting a core saved with shared objects loaded when
2986 those objects are not available no longer causes threaded SBCL to
2987 hang. (reported by Sean Ross)
2988 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2990 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2991 argument, which must always be NIL. (reported by Kalle Niemitalo)
2992 * bug fix: printing 1.0d+23 no longer results in an error.
2993 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2994 * bug fix: structure slot setters preserve evaluation order. (thanks
2996 * fixed some bugs related to Unicode integration:
2997 ** RUN-PROGRAM can allow its child to take input from a Lisp
2998 stream. (reported by Stefan Scholl)
2999 ** ASDF-INSTALL successfully downloads .tar.gz files in all
3000 locales. (reported by Ken Causey)
3001 * fixed some bugs revealed by Paul Dietz' test suite:
3002 ** INCF, DECF and REMF evaluate their place form as specified in
3004 ** FORMATTER expands ~{ ~} iteration directives with V or #
3005 parameters correctly.
3006 ** FORMATTER deals with the ~@[ ~] conditional directive where the
3007 consequent uses no arguments correctly.
3008 ** the system has a partial understanding of the (COMPLEX RATIO)
3010 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
3013 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
3014 * new feature: a build-time option (controlled by the :SB-UNICODE
3015 keyword feature, enabled by default) for building the system with
3016 support for the entire 21-bit character space defined by the
3018 * new feature: the system now has rudimentary external-format
3019 support; the primary user-visible change at this time is that
3020 characters with the high bit set (such as lower-case-e-acute) will
3021 print correctly to a terminal in a UTF-8 environment.
3022 * minor incompatible change: BASE-CHAR no longer names a class;
3023 however, CHARACTER continues to do so, as required by ANSI.
3024 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
3025 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
3026 has been moved to the SB-EXT package (temporarily re-exported from
3028 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
3029 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
3031 * fixed bug #351: better error-handlind and reporting for malformed
3033 * fixed bug #350: bignum-printing is now more memory-efficient,
3034 allowing printing of very large bignums, eg. (expt 2 10000000).
3035 (reported by Bruno Haible)
3036 * fixed bug #302: better primitive-type selection for intersection
3038 * fixed bug #308: non-graphic characters now all have names, as
3039 required. (reported by Bruno Haible)
3040 * bug fix: redefining a class with different superclasses now correctly
3041 removes it from the direct-subclasses of its previous superclasses.
3042 (reported by David Morse)
3043 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
3044 new value now works. (reported by Bruno Haible)
3045 * bug fix: correct canonicalization of multiple non-standard slot
3046 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
3047 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
3048 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
3049 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
3050 now exists, an signals an error.
3051 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
3052 during macroexpansion for non-iteration variables as well. (reported
3053 by Bruno Haible for CMUCL)
3054 * bug fix: Cyclic structures and unprintable objects in compiler
3055 messages no longer cause errors. (reported by Bruno Haible)
3056 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3057 and READ-FROM-STRING all now return a primary value of NIL if
3058 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
3059 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
3060 (reported by Bruno Haible for CMUCL)
3061 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
3062 do not designate a condition. (reported by Bruno Haible for
3064 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
3065 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
3066 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
3067 permitting resolution in favour of any of the conflicting symbols.
3068 (reported by Bruno Haible for CMUCL)
3069 * bug fix: EQUAL compiler optimizations is less aggressive on
3070 strings which can potentially compare true despite having distinct
3071 specialized array element types.
3072 * bug fix: unit enumerations can be defined without dividing by
3073 zero. (thanks to Vincent Arkesteijn)
3074 * FORMAT compile-time argument count checking has been enhanced.
3075 (report from Bruno Haible for CMUCL)
3076 * a partial workaround for the bug 262: the compiler does not try to
3077 inline-expand a local function doing RETURN-FROM from a deleted
3078 BLOCK. (thanks to Peter Denno for the bug report and to David
3079 Wragg for the simple test case)
3080 * fixed some bugs revealed by Paul Dietz' test suite:
3081 ** RENAME-PACKAGE allows all package designators as new package
3083 ** constraint propagation and lambda variable substitution are
3084 more cautious in dealing with partially deleted code.
3085 ** compiler sometimes lost reoptimization passes.
3086 ** CERROR, given a condition as condition designator, passes its
3087 remaining arguments to the continue format control without
3089 ** Case-altering FORMAT directives work correctly on non-ASCII
3091 ** The REAL type specifier handles bounds outside the floating
3092 point ranges without signalling FLOATING-POINT-OVERFLOW.
3093 ** Functions with IR1-transformations can create intercomponent
3094 references to global functions.
3095 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
3097 ** FORMAT ~R treats a nil value for its first parameter correctly.
3099 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
3100 * enhancement: saving cores with foreign code loaded is now
3101 supported on x86/NetBSD and sparc/Linux in addition to the previously
3102 supported platforms.
3103 * bug fix: on some platforms repeated installations caused multiple
3104 copies of HTML documentation to be installed -- should not happen
3105 any more. (reported by Stefan Scholl)
3106 * bug fix: parsing self-recursive alien record types multiple times
3107 no longer causes infinite recursion. (reported by Thomas F. Burdick,
3108 original patch by Helmut Eller for CMUCL)
3109 * bug fix: stack-exhaustion detection works now on NetBSD as well.
3110 (thanks to Richard Kreuter)
3111 * bug fix: defining classes whose accessors are methods on existing
3112 generic functions in other (locked) packages no longer signals
3113 bogus package lock violations. (reported by François-René Rideau)
3114 * bug fix: special variables as DEFMETHOD parameters no longer have
3115 associated bogus type declarations. (reported by David Wragg and
3117 * bug fix: read-write consistency on streams of element-type
3118 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
3119 * bug fix: redefiniton of the only method of a generic function with
3120 no DEFGENERIC no longer emits a full WARNING. In addition,
3121 redefinition of generic functions with no DEFGENERIC to an
3122 incompatible lambda list now signals an error. (thanks to Zach
3124 * bug fix: DEFGENERIC now works even when there's a function of the
3125 same name in an enclosing lexical environment. (thanks to Zach
3127 * fixed compiler failure, caused by instrumenting code during
3128 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
3129 * optimization: added loop analysis and improved register allocation
3130 * fixed some bugs revealed by Paul Dietz' test suite:
3131 ** POSITION on displaced vectors with non-zero displacement
3132 returns the right answer.
3133 ** (SIMPLE-STRING) is a valid type specifier for sequence
3135 ** *PRINT-LEVEL* handling for slotless structures is pedantically
3137 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
3138 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
3140 ** The justification version of the FORMAT ~< directive treats
3141 non-zero minpad parameter correctly.
3143 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
3144 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3145 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
3146 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
3147 the supported interface.
3148 * new feature: Single-stepping of code compiled with DEBUG 2 or
3149 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
3150 * new feature: saving cores with foreign code loaded is now
3151 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
3152 Timothy Moore's work for CMUCL)
3153 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
3154 parameters to * instead of NIL if no initform is supplied.
3155 (reported by Johan Bockgaard)
3156 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
3157 correctly when FUNCALL appears as the car of the form. Note:
3158 despite this FUNCALL forms are not currently subject to
3159 compiler-macro expansion. (port of Raymond Toy's fix for the
3160 same from CMUCL, reported by Johan Bockgaard)
3161 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
3162 (thanks for Teemu Kalvas)
3163 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
3164 case instead of terminating the iteration (thanks for Julian
3165 Squires, Sean Champ and Raymond Toy)
3166 * bug fix: incorrect expansion of defgeneric that caused a style
3167 warning. (thanks for Zach Beane)
3168 * bug fix: slot accessor effective method computation works properly
3169 for classes with multiple non-standard applicable methods on
3170 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
3171 * on x86 compiler supports stack allocation of results of LIST and
3172 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
3173 CMUCL implementation by Gerd Moellmann)
3174 * fixed some bugs revealed by Paul Dietz' test suite:
3175 ** FORMAT strings with both the ~<~:;~> form of the justification
3176 directive and pretty-printing directives cause an error.
3178 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
3179 * incompatible change: the internal functions
3180 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
3181 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
3182 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
3183 instead of the old functions.
3184 * new feature: on platforms where "dladdr" is available foreign
3185 function names now appear in backtraces. (based on Helmut Eller's
3187 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
3188 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
3190 * documentation: ASDF manual is now distributed with SBCL.
3191 * bug fix: SBCL can now load its contributed modules with REQUIRE
3192 even if the system-provided entries have been removed from
3193 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
3195 * bug fix: backtraces involving undefined functions or assembly
3196 routines are more informative. (thanks to Brian Downing)
3197 * bug fix: mutually referent alien structures now work correctly.
3198 (reported by Rick Taube)
3199 * bug fix: structures defined by WITH-ALIEN can be referred to
3200 within other definitions in the same WITH-ALIEN.
3201 * bug fix: division operators (MOD, TRUNCATE and the like) with
3202 constant zero divisors and integer dividends no longer generate
3204 * bug fix: provide default methods for INPUT-STREAM-P and
3205 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
3206 * bug fix: improve the detection and resolution of MOP metacycles
3207 (where effective method computation depends on the generic function
3208 having its effective method computed). (reported by Bruno Haible)
3209 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
3210 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
3211 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
3212 * bug fix: pathnames with relative directory components can be
3213 represented relative to default pathnames.
3214 * optimization: in taking the GCD of bignums, reduce the two bignums
3215 to approximately the same size (using Euclid's algorithm) before
3216 applying the more sophisticated binary GCD. (thanks to Juho
3218 * optimization: COUNT on bitvectors now operates word-at-a-time.
3219 * optimization: ASH with a positive, but not necessarily constant,
3220 (leftwards) shift, when in a modular context, is compiled to a
3222 * fixed some bugs revealed by Paul Dietz' test suite:
3223 ** FORMAT variable parameters ("~V<char>") are defaulted properly
3224 if the corresponding argument is NIL.
3225 ** FORMAT directives accepting a minpad parameter treat negative
3227 ** literal commas as character parameters to FORMAT directives are
3229 ** literal spaces directly after ~<Newline> directives within a
3230 format-logical-block (~:< ~@:>) do not induce :FILL-style
3231 conditional newlines.
3232 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
3233 as specified: it no longer includes conditional newlines).
3234 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
3236 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
3237 :PER-LINE-PREFIX argument does not evaluate to a string.
3239 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
3240 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
3241 the manual for details; for now, package locks can be disabled by
3242 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
3243 if no major problems are found then it is likely that they will be
3244 compiled in unconditionally.
3245 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
3246 unsupported operators on all platforms. To load a shared library
3247 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
3248 object file, link it into a shared library outside of SBCL and
3249 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
3251 * bug workaround: ROOM T and the GC were not working together
3252 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
3253 reporting facility aren't preserved. That reporting has been
3254 disabled, so now until and unless someone figures out how to make it
3255 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
3256 * minor incompatible change: as threatened around sbcl-0.8.0, the
3257 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
3258 The symbols are also exported from SB-PCL for backwards
3259 compatibility, but more so than before SB-PCL should be treated as
3260 an implementation-internal package.
3261 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
3263 * the SB-SPROF contrib now works on (most) non-x86 architectures.
3264 It is known as of this release not to work on the Alpha, however.
3265 * fixed bug #167: errors signalled due to illegal syntax in method
3266 bodies are now more legible.
3267 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
3268 designators and can hence be used with TYPEP.
3269 * fixed bug #333: CHECK-TYPE now ensures that the type error
3270 signalled, if any, has the right object to be accessed by
3271 TYPE-ERROR-DATUM. (reported by Tony Martinez)
3272 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
3273 5.1.2.3 for multiple-value place subforms. (reported by Kalle
3275 * fixed bug #334: programmatic addition of slots using specialized
3276 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
3277 and :ALLOCATION :CLASS slots.
3278 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
3279 float exponents. (rereported by Peter Seibel)
3280 * fixed a bug: #\Space (and other whitespace characters) are no
3281 longer considered to be macro characters in standard syntax by
3282 GET-MACRO-CHARACTER.
3283 * fixed bug: initialization of condition class metaobjects no longer
3284 causes an instance of the condition to be created. (reported by
3286 * fixed bug: it is now possible to have slots such that
3287 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
3288 description is neither :INSTANCE nor :CLASS.
3289 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
3290 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
3291 SLOT-VALUE-USING-CLASS), and no longer causes errors with
3292 non-standard SLOT-DEFINITION-ALLOCATION values.
3293 * fixed bugs: various race conditions handling exiting threads.
3294 CL-PPCRE's thread torture test now passes.
3295 * fixed arguably-a-bug: GC time proportional to number of threads in
3296 system even when most of them are idle
3297 * optimization: improved performance of BIT and SBIT on bit-vectors.
3298 * .fasl file incompatibility: The fasl file version number has
3299 been incremented because of changes associated with package locks.
3301 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
3302 * minor incompatible change: the system no longer provides
3303 optimization hints (conditions which are TYPEP
3304 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
3305 mode; these hints are still emitted when higher SPEED optimization
3307 * new contrib module: a sampling profiler (profiling by statistical
3308 sampling, rather than by instrumenting functions) is available as
3309 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
3310 * the behaviour of the standard function ED is now customizeable by
3311 third parties through a hook variable: see ED's documentation
3312 string for information on the protocol.
3313 * the compiler no longer emits efficiency notes for (FUNCALL X)
3314 when the type of X is uncertain under default optimization
3316 * fixed bug 276: mutating a binding of a specialized parameter to a
3317 method to something that is not TYPEP the specializer is now
3319 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
3320 exhibit the required behaviour on the x86 platform. (thanks to
3321 Peter van Eynde, Eric Marsden and Bruno Haible)
3322 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
3323 even for difficult arguments. (reported by Peter Graves)
3324 * fixed bug 141a: the backquote printer now descends quoted
3326 * fixed another bug in backquote printing: no more destructive
3327 modification of the form's list structure. (reported by Brian
3329 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
3330 move between its address being taken and the call to
3331 interrupt_thread, fixing a crashing race condition.
3332 * the SB-POSIX contrib implementation has been adjusted so that it
3333 no longer exhibits ridiculously poor performance when constructing
3334 instances corresponding to C structs.
3336 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
3337 * minor incompatible change: the sb-grovel contrib now treats C
3338 structures as alien (in the sense of SB-ALIEN) objects rather than
3339 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
3340 has implications for memory management of client code
3341 (sb-grovel-returned objects must now be manually managed) and for
3342 type safety (alien objects now have full types).
3343 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
3344 used to control emission of compiler diagnostics, rather than the
3345 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
3346 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
3347 quality should be considered deprecated.
3348 * install.sh now installs the user manual as well
3349 * (not quite a new documentable feature, but worth considering in
3350 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
3351 beginnings of a semantically meaningful condition hierarchy is
3352 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
3354 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
3355 designator as the defaults argument.
3356 * fixed bug: Displaced arrays whose displaced-to array has become
3357 too small now cause ARRAY-DIMENSION to signal an error, providing
3358 for safer bounds-checking. (reported by Bruno Haible)
3359 * fixed bug: DEFCLASS slot definitions with identical :READER and
3360 :WRITER names now signal a reasonable error. (reported by Thomas
3362 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
3364 * fixed bug: Invalid slot specification errors now print correctly.
3365 (thanks to Zach Beane)
3366 * fixed bug 320: Shared to local slot value transfers in class
3367 redefinitions now happen corrently from superclasses as
3368 well. (reported by Bruno Haible)
3369 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
3371 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
3372 improper lists correctly. (reported by Bruno Haible)
3373 * fixed bug 313: source-transform for <fun-name> was erroneously
3374 applied to a call of a value of a variable with name <fun-name>.
3375 (reported by Antonio Menezes Leitao)
3376 * fixed bug 307: The obsolete instance protocol ensures that
3377 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
3378 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
3379 remove dead unknown-values globs from the middle of the stack.
3380 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
3381 easier to resume long computations after using *BREAK-ON-SIGNALS*
3382 to diagnose and fix failures. (thanks to Nikodemus Siivola)
3383 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
3384 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
3385 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
3386 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
3387 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
3389 * fixed a (fairly theoretical) bug in string printing: if
3390 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
3391 does not have array-element-type equal to the most general string
3393 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
3394 function name. (thanks to Nikodemus Siivola)
3395 * fixed bug: compile-time format string checker failed on
3396 non-closed ~{. (reported by Thomas F Burdick)
3397 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
3398 don't warn on legal loop code involving more than one aggregate
3399 boolean. (thanks to Nikodemus Siivola)
3400 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
3401 in keyword position to MAKE-PACKAGE was not being reported as
3403 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
3404 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
3406 * fixed bugs 280 and 312: the checking for multiple definitions in a
3407 file is less likely to become confused by uses of inline
3409 * fixed bug: the #S reader macro performs the keyword coercion
3410 specified for slot names. (reported by Kalle Niemitalo)
3411 * fixed bug: lambda lists may contain symbols whose names start with
3412 & but are not lambda-list-keywords; their occurrence triggers a
3414 * fixed bug 321: define-method-combination argument lambda lists do
3415 not cause invalid code to be generated when &optional or &aux
3416 variables have default values. (reported by Bruno Haible)
3417 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
3418 have CLOS classes; this appears also to have fixed reported
3419 instability in stack exhaustion detection.
3420 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
3421 MUFFLE-WARNING when no associated restart is present is now
3423 * optimization: rearranged the expansion of various defining macros
3424 so that each expands into only one top-level form in a
3425 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
3427 * optimization: used a previously little-used slot in symbols to
3428 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
3430 * fixed some bugs revealed by Paul Dietz' test suite:
3431 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
3433 ** Fixed an optimization bug related to inheritance of initforms
3434 from local to shared slots.
3435 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
3436 ** CAST optimizer forgot to flush argument derived type.
3437 ** print/read consistency on floats is now orders of magnitude
3438 more likely. (thanks also to Bruno Haible for a similar report
3440 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
3441 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
3442 for objects of type REAL. Make it so.
3443 ** SXHASH is specified (infelicitously) to respect similarity,
3444 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
3445 it so. (thanks to Markus Ziegler)
3446 ** on the Alpha, the compiler succeeds in compiling functions
3447 returning a known number of arguments greater than 63.
3448 ** fixed handling of invalid NIL arguments in keyword position
3450 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
3452 ** provided a readably-printable representation for RANDOM-STATE
3454 ** ensured that pathnames, where they have a namestring, always
3455 print using #P"..." syntax.
3457 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3458 * Support for the forthcoming 2.0 version of the NetBSD kernel
3459 running on x86 hardware has been added. (thanks to Perry
3460 E. Metzger most immediately, and others for their past work)
3461 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3462 current release version; SBCL's OpenBSD support had been broken
3463 since about the time of OpenBSD's switch to ELF binary format.)
3464 * [placeholder for DX summary]
3465 ** user code with &REST lists declared dynamic-extent, under high
3466 speed or space and low safety and debug optimization policy.
3467 * The manual has been converted to Texinfo format and the debugger
3468 chapter from the cmucl manual has been added.
3469 * A facility has been added to extract documentation strings from
3470 sbcl and store them as Texinfo-formatted snippets for inclusion in
3471 the manual (via Texinfo's @include directive)
3472 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3473 the test case to Dave Roberts)
3474 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3475 pointers. (reported by Sean Ross)
3476 * bug fix: PROFILE output is printed nicely even for large numerical
3477 values. (thanks to Zach Beane)
3478 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3479 greater than 32 handle EOF correctly.
3480 * bug fix: on X86 an immediate argument of the IMUL instruction is
3481 correctly printed in disassembly. (thanks to Lutz Euler)
3482 * bug fix: class slots in redefined classes preserve their old
3483 values. (thanks to Bruno Haible and Nikodemus Siivola)
3484 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3485 succeeds. (reported by Marco Baringer)
3486 * fixed some bugs revealed by Paul Dietz' test suite:
3487 ** READ-SEQUENCE now works on ECHO-STREAMs.
3488 ** RATIONALIZE works more according to its specification. (thanks
3491 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3492 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3493 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3494 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3495 should matter to you only if you rebind the printer control
3496 variables and then find you want different bindings in the
3497 debugger than in the ordinary execution of your program.)
3498 * The runtime build system has been tweaked to support building
3499 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3500 assembler and linker. (thanks to Nikodemus Siivola)
3501 * Unbound, undefined, undeclared variables now trigger full
3502 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3503 more often programmer error than deliberate exploitation of undefined
3505 * optimization: the hash algorithm for strings has changed to one
3506 that is less vulnerable to spurious collisions. (thanks to Juho
3508 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3509 needless bounds checking. (thanks to Juho Snellman)
3510 * optimization: implemented multiplication as a modular
3511 (UNSIGNED-BYTE 32) operation on the PPC backend.
3512 * fixed some bugs revealed by Paul Dietz' test suite:
3513 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3515 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3516 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3517 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3519 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3521 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3523 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3524 their output stream on EOF from read.
3525 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3526 have been read to end-of-file.
3527 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3529 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3530 description of determination of which consecutive characters
3532 ** Printing the "Space" character with escaping on now yields "#\\ ",
3533 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3534 ** Reading floating-point numbers with *READ-BASE* set to a number
3535 less than 10 works correctly.
3536 ** Reading floating-point numbers with *READ-BASE* set to a number
3537 more than 10 works correctly.
3538 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3539 the readtable currently in effect.
3541 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3542 * minor incompatible change: parsing of namestrings on a physical
3543 (Unix) host has changed; numbers after the final #\. in a
3544 namestring are no longer interpreted as a version field. This is
3545 intented to be largely invisible to the user, except that the
3546 meaning of the namestring "*.*.*" has changed: it now refers to a
3547 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3548 should usually be replaced by
3549 (make-pathname :name :wild :type :wild :version :wild)
3550 with the added benefit that this is more likely to be portable.
3551 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3552 option to OPEN now signals an error if the file being opened
3553 exists; this may have an impact on existing code.
3554 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3555 signals received, on the PowerPC platforms (both Linux and
3556 Darwin). (thanks to Pierre Mai for pointing out the location of
3558 * several fixes on OS X: The system now builds and runs cleanly on
3559 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3560 (thanks to Brian Mastenbrook)
3561 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3562 second-resolution: integer multiples of 1/3600 between -24 and 24.
3563 (thanks to Vincent Arkesteijn)
3564 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3565 type when called with 1 argument; PEEK-CHAR checked type of
3566 PEEK-TYPE only after having read first character from a
3567 stream. (reported by Peter Graves)
3568 * bug fix: the garbage collector now has much better locality
3569 behaviour, and in particular no longer treats all memory as being
3570 exhausted when many small objects point to each other in a deeply
3572 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3573 recognized as being TYPEP their class.
3574 * bug fix: the PUSHNEW documentation string has been corrected.
3575 (thanks to Vincent Arkesteijn)
3576 * bug fix: defaulting of the value for the last of an atypically
3577 large number of multiple values being bound was not being
3578 performed correctly on the Alpha or PPC platforms
3579 * optimization: implemented multiplication as a modular
3580 (UNSIGNED-BYTE 32) operation on the x86 backend.
3581 * optimization: SEARCH on simple-base-strings can now be open-coded.
3582 (see also contrib/compiler-extras.lisp for inspiration for
3583 teaching the compiler about the Boyer-Moore algorithm).
3584 * value, returned by MAX (and MIN) called with several EQUALP, but
3585 not EQL, arguments now does not depend on compiler settings.
3586 * fixed some bugs revealed by Paul Dietz' test suite:
3587 ** in stack analysis liveness information is propagated from
3588 non-local entry points.
3589 ** pathwise CAST removing failed when the CAST node did not start
3591 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3592 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3594 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3595 host is already defined.
3596 ** RENAME-FILE works on streams instead of signalling an internal
3598 ** PEEK-CHAR uses the current readtable when determining whether
3599 or not a character is whitespace.
3600 ** MERGE-PATHNAMES handles the case when the pathname does not
3601 specify a name while the default-pathname specifies a version.
3602 ** Pathnames now stand a better chance of respecting print/read
3604 ** Attempting to use standardized file system operators with a
3605 pathname with invalid :DIRECTORY components signals a
3607 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3609 ** DIRECTORY on logical pathnames is more correct.
3610 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3611 signal a TYPE-ERROR if their argument is not a stream.
3612 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3613 designator argument does not designate a stream.
3614 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3615 examining the synonym.
3616 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3618 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3619 element-type larger than ([UN]SIGNED-BYTE 32).
3621 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3622 * When built with the :SB-FUTEX feature, threaded builds now take
3623 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3624 for faster/more reliable mutex and condition variable support.
3625 * Incompatible change (but one you probably shouldn't have been using
3626 anyway): the interface and code for arbitrating between multiple
3627 threads in the same user session has been redesigned.
3628 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3629 error when called without an explicit environment argument.
3630 (thanks to Nikodemus Siivola)
3631 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3632 confused about their position. (thanks to Adam Warner and Gerd
3634 * bug fix: Pretty printing backquoted forms with unquotations in the
3635 argument list position of various code constructs such as LAMBDA
3636 now works correctly. (reported by Paul Dietz)
3637 * bug fix: Pretty printing unquotations no longer loses all
3638 stream position information.
3639 * optimization: performance of string output streams is now less
3640 poor for multiple small sequence writes.
3641 * optimization: performance of CSUBTYPEP in the presence of complex
3642 expressions involving CONS and NOT many times has been improved.
3643 (reported by Paul Dietz)
3644 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3646 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3647 streams for the REPL, for the debugger, and so on. (thanks to
3649 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3650 * fixed some bugs revealed by Paul Dietz' test suite:
3651 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3652 is ignored if it is too small, rather than propagating through
3653 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3654 ** extremely complex negations of CONS types were not being
3655 sufficiently canonicalized, leading to inconsistencies in
3657 ** VALUES tranformer lost derived type.
3659 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3660 * fixed a bootstrapping bug: the build process no longer assumes
3661 that the various BOOLE-related constants have the same value in
3662 host and target lisps. (noted by Paul Dietz' test suite on an
3663 SBCL binary built from CLISP)
3664 * The system can now be dynamically linked on the MIPS platform,
3665 which enables dynamic loading of foreign code from Lisp. (thanks
3666 to Ralf Baechle for discussions on the MIPS ABI)
3667 * The system now records debugging information for its own source
3668 files in a filesystem-position-independent manner, relative to
3669 the "SYS" logical host.
3670 * fixed a compiler bug: MV-LET convertion did not check references
3671 to the "max args" entry point. (reported by Brian Downing)
3672 * tweaked disassembly notes to be less confident about proclaiming
3673 some instruction as an LRA. (thanks to Brian Downing)
3674 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3675 now each have their own history, command character, and other
3676 characteristics. (thanks to David Lichteblau)
3677 * fixed some bugs revealed by Paul Dietz' test suite:
3678 ** compiler failure in compiling LOGAND expressions including a
3680 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3681 shift greater than 32.
3682 ** FLUSH-DEST did not mark blocks for type check regeneration.
3683 ** HANDLER-CASE failed to accept declarations in handler clauses
3684 in some circumstances.
3686 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3687 * New code in contrib/sb-introspect (still probably not entirely
3688 stable yet) provides some support for smart Lisp development
3689 environments like SLIME.
3690 * The conditions signalled for errors occurring when loading .fasl
3691 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3692 in a way which should help ASDF recover gracefully.
3693 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3694 stuff has been cleaned up. If you code contrib/ stuff, this might
3695 affect you, and you can look at contrib/README, contrib/STANDARDS,
3696 and/or the 0.8.4.27 diff to check.
3697 * In full calls the compiler now does not generate checks for declared
3698 argument types for all arguments.
3699 * various threading fixes
3700 ** and some experimental patches which didn't make it into
3701 the main tree for this release, but which are shipped in
3702 contrib/experimental-thread.patch as a possible fix for some
3703 failures (deadlock, spinning...) in GC-intensive multithreaded
3705 * fixed PPC build problem (source code incompatibility of different
3706 library versions): added offsetof() hackery which attempts to divine
3707 where glibc maintainers put uc_mcontext today
3708 * fixed bug 282: compiler does not trust type assertions while passing
3709 arguments to a full call.
3710 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3711 &OPTIONAL VALUES type parameter.
3712 * fix bug 214: algorithm for noting rejected templates is now more
3713 similar to that of template seletion. (also reported by rydis on
3715 * fixed bug 141b: printing backquoted information readably and prettily
3716 inserts a space where necessary.
3717 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3718 (CHARACTER 10) are now reported as errors, rather than propagated
3719 as unknown types. (reported by piso on #lisp)
3720 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3721 with values NIL and :ERROR. (thanks to Milan Zamazal)
3722 * fixed bug 191c: CLOS now does proper keyword argument checking as
3723 described in CLHS 7.6.5 and 7.6.5.1.
3724 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3725 longer raise an error; further, using a list as a for-as-arithmetic
3726 counter now raises a meaningful error.
3727 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3728 now understood by sequence creation functions such as MAKE-SEQUENCE
3730 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3731 a STRING-INPUT-STREAM.
3732 * compiler enhancement: SIGNUM is now better able to derive the type
3734 * type declarations inside WITH-SLOTS are checked. (reported by
3736 * fixed some bugs revealed by Paul Dietz' test suite:
3737 ** incorrect optimization of TRUNCATE for a positive first
3738 argument and negative second.
3739 ** compiler failure in let-convertion during flushing dead code.
3740 ** compiler failure while deriving type of TRUNCATE on an
3741 interval, containing 0.
3742 ** ASH of a negative bignum by a negative bignum count now returns
3744 ** intersection of CONS types now canonicalizes properly, fixing
3745 inconsistencies in SUBTYPEP.
3747 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3748 * incompatible change: The --disable-debugger command line
3749 option now clobbers the debugger at a more fundamental
3750 level, by redefining #'INVOKE-DEBUGGER instead of by
3751 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3752 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3753 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3754 enter the debugger REPL and then suffer recursive errors
3755 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3756 while under the new system, BREAK in --disable-debugger mode
3757 terminates the system just as an unhandled error would.
3758 * fixed compiler performance when processing loops with a step >1;
3759 * bug fix: DOCUMENTATION now retrieves generic function
3760 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3761 support has been systematized, and now supports the methods
3762 specified by ANSI, along with a default method and a method for
3763 slot documentation. (reported by Nathan Froyd)
3764 * bug fix: effective methods associated with a generic function are
3765 no longer cached over a change of that generic function's method
3766 combination. (reported by Andreas Fuchs)
3767 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3768 names a non-existent directory. (thanks to Andreas Fuchs)
3769 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3770 the PPC platform, lead to stack corruption; this has been fixed.
3771 (reported by Rainer Joswig)
3772 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3773 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3774 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3775 arithmetic in general, is now much more reliable on the PPC
3777 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3778 platform now returns the right answer.
3779 * optimization: restored some effective method precomputation in
3780 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3781 precomputation is now tunable.
3782 * optimization: compiler-internal data structure use has been
3783 reviewed, and changes have been made that should improve the
3784 performance of the compiler by about 20%.
3785 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3786 simple-base-strings and simple-bit-vectors is improved.
3787 * optimization: the optimization of 32-bit logical and arithmetic
3788 functions introduced in version 0.8.3 on the x86 has been
3789 implemented on the mips, ppc and sparc platforms; an
3790 implementation of the same facility, but for 64-bit arithmetic,
3791 has been added for the alpha.
3792 * microoptimization: the compiler is better able to make use of the
3793 x86 LEA instruction for multiplication by constants.
3794 * bug fix: in some situations compiler did not report usage of
3795 generic arithmetic in (SPEED 3) policy.
3796 * bug 145b fix: compiler used wrong type specifier while converting
3797 MEMBER-types to numeric.
3798 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3800 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3801 index argument now works properly on the Alpha platform.
3802 * bug fix: floating point exception treatment on the Alpha platform
3804 * bug fix: FILE-POSITION works much better on string input and
3805 output streams. (thanks to Nikodemus Siivola)
3806 * bug fix: many threading/garbage collection symptoms sorted.
3807 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3808 might be pseudo-atomic.
3809 * internal change: Stopping for GC is now done with signals not
3810 ptrace. GC is now done in whichever thread wanted it, instead of
3812 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3814 * bug fix: result form in DO is not contained in the implicit
3816 * incompatible change: ICR structure is changed; the value part of
3817 CONTINUATION is now called LVAR; corresponding functions are
3818 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3819 * added type deriver for ISQRT (thanks to Robert E. Brown).
3820 * bug fix: better support for loading from the command line when an
3821 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3823 * fixed some bugs revealed by Paul Dietz' test suite:
3824 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3825 ** ROUND and FROUND now give the right answer when given very
3826 small float arguments.
3827 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3829 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3830 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3831 ** LCM should return a non-negative integer.
3832 ** PARSE-INTEGER returned the index of a terminator instead of the
3833 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3834 ** PARSE-INTEGER returned an incorrect index being applied to a
3836 ** LCM with two arguments of 0 returns 0 rather than signalling
3838 ** unsigned addition of a 32-bit constant with the high bit set no
3839 longer causes an internal compiler error on the x86.
3840 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3841 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3842 with negative last argument.
3843 ** byte specifiers with zero size and position no longer cause
3844 an error during type derivation.
3845 ** bignum multiplication on the Alpha platform now returns the
3847 * porting: The system now builds on SuSE AMD64, although it still
3848 generates a 32-bit binary.
3849 * .fasl file incompatibility: The fasl file version number has
3850 been incremented (because of the changes to internal compiler
3851 data structures referred to above).
3853 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3854 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3855 more accurately, on the Darwin kernel running on PowerPC hardware.
3856 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3857 * Compiler code deletion notes now signal a condition of type
3858 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3859 an associated MUFFLE-WARNING restart.
3860 * The compiler now performs limited argument count validation of
3861 constant format strings in FORMAT, and where appropriate in ERROR,
3862 CERROR and WARN. (thanks to Gerd Moellmann)
3863 * New ASDF-INSTALL contrib can be used for automatic download and
3864 installation of third-party Lisp code from CCLAN or other sites
3866 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3867 which forces another thread to execute a function supplied by the
3869 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3870 now accept and act upon their :ELEMENT-TYPE keyword argument.
3871 (reported by Martin Atzmueller, Edi Weitz)
3872 * bug fix: FILE-POSITION now accepts position designators up to
3873 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3874 is the greater. (thanks to Patrik Nordebo)
3875 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3876 Kalle Olavi Niemitalo)
3877 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3878 printable. (reported by Eric Marsden)
3879 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3880 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3881 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3882 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3883 (thanks to Stig Sandoe)
3884 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3885 UNREAD-CHAR now correctly includes the unread character in the
3886 target sequence. (thanks to Gerd Moellmann)
3887 * bug fix in threaded builds: the system can now be suspended and
3888 resumed by shell job control with minimal disruption.
3889 * bug fixes in times and timezones >2038AD
3890 * better handling of "where is GNU make?" problem in build scripts
3891 (thanks to Nikodemus Siivola)
3892 * new optimization: inside a named function any reference to a
3893 function with the same name is considered to be a self-reference;
3894 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3895 optimization quality.
3896 * new optimization on x86: logical functions and + now have
3897 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3898 used when the result is truncated to 32 bits.
3899 * VALUES declaration is partially enabled.
3900 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3901 * fixed some bugs revealed by Paul Dietz' test suite:
3902 ** The system now obeys the constraint imposed by
3903 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3904 types form a lattice under type intersection.
3905 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3906 ** ASSOC now ignores NIL elements in an alist.
3907 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3908 and (1+ MOST-POSITIVE-FIXNUM) answers.
3909 ** The addition of a method with invalid qualifiers to a generic
3910 function does not cause an error to be signalled immediately;
3911 a warning is signalled, and the error is generated only on
3912 calling the generic function.
3913 * changed .fasl file version number, in part to add type codes for
3914 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3915 obscure ANSI requirements
3917 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3918 * fixed bug 148: failure to inline-expand a local function left
3919 garbage, confusing the compiler.
3920 * fixed bugs 3cd: structure slot readers perform type check if the
3921 slot can have an invalid value (i.e. it is either not initialized
3922 or can be written with a less specific slot writer).
3923 * bug fix: the compiler now traps array references to elements off
3924 the end of an array; previously, the bounds checking in some
3925 circumstances could go off-by-one.
3926 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3928 * type declarations for array element types now obey the description
3929 on the CLHS page "Declaration TYPE", as per discussions on
3930 sbcl-help around 2003-05-08. This means that a declaration
3931 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3932 declaration, all references to BAR will be asserted or assumed
3933 (with THE, so dependent on compiler policy) to involve objects of
3934 type FOO. Note that no such declaration is implied in
3935 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3936 * declared types of functions from the "Conditions"
3937 chapter. (reported by Paul Dietz)
3938 * bug fix: CERROR accepts a function as its first argument.
3939 * bug fix: NTH an NTHCDR accept a bignum as index
3940 arguments. (reported by Adam Warner)
3941 * optimization: character compare routines now optimize comparing
3942 against a constant character. (reported by Gilbert Baumann)
3943 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3944 argument now works properly on the MIPS platform.
3945 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3946 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3947 declared to have a functional type, does not cause an error
3949 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3950 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3951 * fixed bug: if last continuation of a deleted block has a
3952 destination, this destination should be deleted too. (reported by
3954 * fixed a bug in the bootstrap process: the host compiler's values
3955 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3956 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3957 test case from Patrik Nordebo)
3958 * improved the ability of the disassembler on the PPC platform to
3959 provide helpful disassembly notes.
3960 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3961 the class in more cases than previously.
3962 * bug fix: FILE-POSITION now understands :START and :END for
3963 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3964 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3965 8) data. (thanks to David Lichteblau)
3966 * bug fix: it is possible to add a method to a generic function
3967 without lambda list.
3968 * bug fix: reader failed to signal END-OF-FILE inside an
3969 object representation. (reported by Nikodemus Siivola)
3970 * fixed some bugs revealed by Paul Dietz' test suite:
3971 ** LAST and [N]BUTLAST should accept a bignum.
3972 ** condition slot accessors are methods.
3973 ** (VECTOR NIL) is a subtype of STRING.
3975 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3976 * minor incompatible change: some nonsensical specialized lambda
3977 lists (used in DEFMETHOD) which were previously ignored now signal
3979 * minor incompatible change: the system is now aware of the types of
3980 variables in the COMMON-LISP package, and will signal errors for
3981 most violations of these type constraints (where previously they
3982 were silently accepted).
3983 * minor incompatible change: COMPILE-FILE now uses the freedom
3984 afforded (ANSI 3.2.2.3) to use derived function types for
3985 functions defined in the same file. This also permits the system
3986 to warn on static type mismatches and function
3987 redefinition. (Currently it does not work with high DEBUG level.)
3988 * minor incompatible change: VALUES declaration is disabled.
3989 * When issuing notes, the compiler now signals a condition of type
3990 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3991 restart for use in user handlers. It is expected that the
3992 COMPILER-NOTE condition will eventually become a condition
3993 supertype to a hierarchy of note types, which will then be
3994 handleable in a similar fashion. However, at the moment, no such
3995 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3996 but it's an implementation detail, not a classification for the
3998 * Changes in type checking closed the following bugs:
3999 ** type checking of unused values (192b, 194d, 203);
4000 ** template selection based on unsafe type assertions (192c, 236);
4001 ** type checking in branches (194bc).
4002 * A short form of VALUES type specifier has ANSI meaning (it has
4003 increased the number of situations when SBCL cannot perform type
4005 * fixed bug in DEFSTRUCT: once again, naming structure slots with
4006 keywords or constants is permissible.
4007 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
4008 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
4009 classes. (thanks to Antonio Martinez)
4010 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
4011 outputs FRESH-LINE or TERPRI, and no longer converts its stream
4012 argument to a pretty-print stream. Instead, it leaves any such
4013 operations to DESCRIBE-OBJECT methods.
4014 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
4016 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
4017 lambda lists. (thanks to David Lichteblau)
4018 * bug fix: Defining a generic function with a :METHOD-CLASS being a
4019 subclass of STANDARD-METHOD no longer causes stack exhaustion.
4020 (thanks to Gerd Moellmann)
4021 * fixed bug 246: increased compilation speed of long
4022 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
4024 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
4026 * DEFCONSTANT now throws a condition of type
4027 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
4028 constant to a non-EQL value; CONTINUE and ABORT restarts
4029 respectively change and preserve the value.
4030 * fixed bug 63: The code walker, part of the implementation of CLOS,
4031 is now better at handling symbol macros.
4032 * bug fix: There is no longer an internal implementation type named
4033 CL:LENGTH. (reported by Raymond Toy)
4034 * bug fix: In macro-like defining macros/special operators the
4035 implicit block does not enclose the lambda list.
4036 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
4037 enclosed in parentheses) are not suitable as type specifiers, and
4038 their use properly signals an error now.
4039 * bug fix: An argument count mismatch for a type specifier in code
4040 being compiled no longer causes an unhandled error at compile
4041 time, but signals a compile-time warning.
4042 * fixed simple vector readable printing
4043 * bug fix: DESCRIBE takes more care over whether the class
4044 precedence list slot of a class is bound before accessing it.
4045 (reported by Markus Krummenacker)
4046 * bug fix: FORMATTER can successfully compile pretty-printer format
4047 strings which use variants of the ~* directive inside.
4048 * bug fix: SEARCH now applies its TEST predicate to the elements of
4049 the arguments in the correct order. (thanks to Wolfhard Buss)
4050 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
4051 in type inference. (thanks to Robert E. Brown)
4052 * bug fix: Reading in symbols with an explicit package name of ""
4053 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
4054 * fixed some bugs revealed by Paul Dietz' test suite:
4055 ** NIL is now allowed as a structure slot name.
4056 ** Arbitrary numbers, not just REALs, are allowed in certain
4057 circumstances in LOOP for-as-arithmetic clauses.
4058 ** Multiple class redefinitions before slot access no longer
4059 causes a type error.
4060 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
4061 association between the name and a class.
4062 ** Generic functions with non-standard method-combination and over
4063 five methods all of which return constants no longer return NIL
4064 after the first few invocations. (thanks to Gerd Moellmann)
4065 ** CALL-NEXT-METHOD with no arguments now passes the original
4066 values of the arguments, even in the presence of assignment.
4067 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
4069 ** DISASSEMBLE works with closures and funcallable instances.
4070 ** ADD-METHOD now returns the generic function, not the new method.
4071 ** FIND-METHOD signals an error if the lengths of the specializers
4072 is incompatible with the generic function, even if the ERRORP
4074 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
4075 which its argument is a member.
4076 ** DEFCLASS only redefines the class named by its class-name
4077 argument if that name is the proper name of the class;
4078 otherwise, it creates a new class.
4079 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
4080 of the UNBOUND-SLOT condition to the name of the slot.
4081 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
4082 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
4083 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
4084 SLOT-MAKUNBOUND in the specified fashion.
4086 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
4087 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
4088 cross-compilation host. As a consequence, we can now bootstrap our
4089 way up to SBCL starting with a bare gcc toolchain and human-readable
4090 source code (first the source to CLISP, then the source to SBCL).
4091 * A contributed module containing a partial implementation of the
4092 simple-streams interface has been included. (thanks to Rudi
4094 * A contributed module implementing the RFC1321 Message Digest
4095 Algorithm, known as MD5, has been included.
4096 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
4097 no longer has any effect, as the code controlled by this feature
4098 has been deleted. (As far as we know, no-one has ever built using
4099 this feature, and its semantics were confused in any case).
4100 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
4101 work on conditions (as required by the ANSI specification),
4102 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
4103 expected behaviour on conditions. Users should note, however,
4104 that such behaviour is not required by the ANSI specification,
4105 and so use of this behaviour may render their code unportable.
4106 * fixed some bugs revealed by Paul Dietz' test suite:
4107 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
4109 ** &ENVIRONMENT parameter in macro lambda list is bound first.
4110 ** SXHASH on condition objects no longer returns NIL.
4111 ** :ALLOCATION :CLASS slots are better treated; their values are
4112 updated on class redefinition, and initforms inherited from
4113 superclasses are applied.
4114 ** REMOVE-METHOD returns its generic function argument even when
4115 no method was removed.
4116 ** SHARED-INITIALIZE now initializes the values of the requested
4117 slots, including those with :ALLOCATION :CLASS.
4118 ** ALLOCATE-INSTANCE now works on structure classes defined via
4119 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
4121 ** SLOT-EXISTS-P now works on conditions, as well as structures
4123 ** MAKE-LOAD-FORM now has the required methods on
4124 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
4125 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
4126 keyword, and now implements the SLOT-NAMES argument.
4127 ** methods with &OPTIONAL arguments no longer allow too many
4128 arguments to be passed in the call without error.
4129 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
4130 option is consistent with the required arguments of the generic
4131 function lambda list.
4132 * bug fix: REQUIRE accepts a string designator. (Thanks to
4134 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
4135 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
4136 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
4137 * bug fix: The compiler now checks for duplicated variables in macro
4139 * bug fix: SETQ on globals returns the correct value.
4140 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
4141 not a COMPILER-ERROR (followed by some other strange error on
4142 choosing the CONTINUE restart).
4143 * bug fix: make.sh and friends are now more consistent in the way that
4144 they look for GNU "make".
4146 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
4147 * experimental native threads support (on x86 Linux >=2.4 only).
4148 This is not compiled in by default: you need to add :SB-THREAD to
4149 the target features. See the "Beyond ANSI" chapter of the manual
4151 * fix for longstanding nonANSIism: The old distinction between
4152 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
4153 The return value from CL:FIND-CLASS is now a CLOS class, and
4154 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
4155 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
4156 * An interface to the MetaObject Protocol, as described in Kiczales,
4157 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
4158 MIT Press, 1991, is available from the SB-MOP package.
4159 * incompatible change: the SB-PCL package should now be considered
4160 a private implementation detail, and no longer a semi-private MOP
4162 * minor incompatible change: due to rearrangement for threads, the
4163 control stack and binding stack are now allocated at arbitrary
4164 addresses instead of being hardcoded per-port. Users affected by
4165 this probably have to be doing advanced things with shared
4166 libraries, and will know who they are.
4167 * minor incompatible change: Previously, all --eval forms used were
4168 processed with READ before any of them were processed with EVAL.
4169 Now each --eval form is processed with both READ and EVAL before
4170 the next --eval form is processed. (Thus package operations like
4171 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
4172 work as the user might reasonably expect.)
4173 * minor incompatible change: *STANDARD-INPUT* is now only an
4174 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
4176 * minor incompatible change: Y-OR-N-P is now character-oriented,
4177 not line oriented. Also, YES-OR-NO-P now works without errors.
4178 (thanks to Antonio Martinez)
4179 * sb-aclrepl module improvements: an integrated inspector, added
4180 repl features, and a bug fix to :trace command.
4181 * Known functions, which cannot be open coded by the backend, are
4182 considered to be able to check types of their arguments. (fixing
4183 a bug report by Nathan J. Froyd)
4184 * fixed a bug in computing method discriminating functions: It is
4185 now possible to define methods specialized on classes which have
4186 forward-referenced superclasses. (thanks to Gerd Moellmann)
4187 * fixed evaluation order in optional entries (reported by Gilbert
4189 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
4190 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
4191 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
4192 required-by-AMOP NAME argument, as well as CLASS and
4193 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
4194 * fixed bug 20: DEFMETHOD can define methods using names that are
4195 not the proper names of classes to designate class specializers.
4196 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
4197 Unix file descriptors, instead of blowing up. (thanks to Antonio
4199 * Garbage collection refactoring: user-visible change is that a
4200 call to the GC function during WITHOUT-GCING will not do garbage
4201 collection until the end of the WITHOUT-GCING. If you were doing
4202 this you were probably losing anyway.
4203 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
4204 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
4205 TYPEP the latter but not the former.
4206 * The compiler issues a full WARNING for calls to undefined functions
4207 with names from the CL package.
4208 * MAP-INTO for a vector destination is open coded. (reported by
4209 Brian Downing on c.l.l)
4210 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
4211 documentation string.
4212 * fixed some bugs revealed by Paul Dietz' test suite:
4213 ** COPY-ALIST now signals an error if its argument is a dotted
4215 ** Condition slots are now accessed more correctly in the presence
4216 of multiple initargs for a given slot.
4217 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
4218 exclude restarts of the same name associated with a different
4220 ** DEFCLASS of forward-referenced classes with another
4221 forward-referenced class in the superclasses list no longer
4223 ** Condition slots are now initialized once each, not multiple
4224 times. (thanks to Gerd Moellmann)
4225 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
4227 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
4228 ** NSET-EXCLUSIVE-OR does not return extra elements when its
4229 arguments contain duplicated elements.
4230 ** RESTART-CASE understands local macros.
4231 ** RESTART-CASE associates exactly its own restarts with a condition.
4232 ** ENDP in safe mode checks its argument to be of type LIST.
4233 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
4234 in question is unbound.
4235 ** Optimized MAKE-INSTANCE functions no longer cause internal
4236 assertion failures in the presence of duplicate initargs.
4237 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
4238 ** Side-effectful :DEFAULT-INITARGS have their side-effects
4239 propagated even in the ctor optimized implementation of
4241 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
4243 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
4244 * a better implementation of SXHASH on (simple) bit vectors,
4245 measured both in execution speed and in distribution of results
4246 over the positive fixnums, has been installed. Likewise, a better
4247 implementation of EQUAL for simple bit vectors is now available.
4248 * fixed CEILING optimization for a divisor of form 2^k.
4249 * fixed bug 240 (emitting extra style warnings "using the lexical
4250 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
4251 by Antonio Martinez)
4252 * fixed SXHASH, giving different results for NIL depending on type
4253 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
4254 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
4255 variable. (found by Rolf Wester)
4256 * SBCL does not ignore type declarations for special
4257 variables. (reported by rif on c.l.l 2003-03-05)
4258 * some bug fixes in contrib/sb-aclrepl/
4259 * fixed some bugs revealed by Paul Dietz' test suite:
4260 ** a bug in the CONS type specifier, whereby the CAR and CDR
4261 types got intertwined, has been fixed;
4262 ** the type system is now able to reason about the interaction
4263 between INTEGER and RATIO types more completely;
4264 ** APPEND, [N]REVERSE and NRECONC check that those their
4265 arguments, which must be proper lists, are really so;
4266 ** An array specialized to be unable to hold elements has been
4267 implemented, as required -- yes, really -- by ANSI;
4268 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
4269 on malformed property lists;
4271 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
4272 * incompatible packaging change: in line with Unix convention,
4273 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
4274 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
4275 * REQUIRE and PROVIDE are now optionally capable of doing something
4276 useful. See the documentation string for REQUIRE.
4277 * infrastructure for a managed SBCL contrib system: contributed
4278 modules in this release include:
4279 ** the ASDF system definition facility;
4280 ** an interface to the BSD Sockets API;
4281 ** an ACL-like convenience interface to the repl;
4282 (thanks to Kevin Rosenberg)
4283 ** an implementation of ROTATE-BYTE, with efficient implementation
4285 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
4286 gives a closer approximation to the right answer than previously.
4287 (thanks to Raymond Toy)
4288 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
4289 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
4290 optional environment arguments, as required by ANSI.
4291 * fixed bugs in other functions taking environment objects, allowing
4292 calls with an explicit NIL environment argument to be compiled
4294 * fixed bug 228: primary return values from
4295 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
4296 COMPILE or FUNCTION.
4297 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
4298 :TYPE will no longer signal errors on innocuous objects.
4299 * fixed bug 231b: SETQ is better at respecting type declarations in
4300 the lexical environment.
4301 * fixed a bug in DEFCLASS: classes named by symbols with no or
4302 unprintable packages can now be defined.
4303 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
4304 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
4305 * fixed compiler failure related to checking types of functions.
4306 (reported by Robert E. Brown)
4307 * the compiler is now much more consistent in its error-checking
4308 treatment of bounding index arguments to sequence functions: in
4309 (SAFETY 3) code, errors will be signalled in almost all cases if
4310 invalid sequence bounding indices are passed to functions defined
4311 by ANSI to operate on sequences.
4312 * fixed a bug in the build procedure: documentation of SBCL-specific
4313 packages is now preserved and available in the final Lisp image.
4314 * lifted FDEFINITION lookup out of loops in the implementation of
4315 many list operations. (thanks to Robert E. Brown)
4316 * fixed a bug in the reader: the #n# reader macro now works for
4317 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
4318 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
4319 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
4320 E. Brown and Tony Martinez respectively)
4321 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
4322 SLOT-BOUNDP: in particular, it is now able to optimize them much
4323 better, and is now not vulnerable to having packages renamed.
4324 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
4325 always called when a slot is not present in an instance. (thanks
4327 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
4328 longer signal an error on unreading a character following EOF on
4329 the previous constituent stream. (thanks to Tony Martinez)
4330 * fixed some bugs revealed by Paul Dietz' test suite:
4331 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
4332 not just nonnegative fixnums;
4333 ** the logical bit-array operators such as BIT-AND now accept an
4334 explicit NIL for their "opt-arg" argument (to indicate a
4335 freshly-consed result bit-array);
4336 ** ELT now signals an error on an invalid sequence index in safe
4338 ** the type system is now cleverer about negations of numeric
4339 types, and consequently understands the BIGNUM and RATIO types
4341 ** the type system is now cleverer about the interaction between
4342 INTEGER and RATIO types: while bugs still remain, many more
4343 cases are accurately computed;
4344 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
4345 if it is in the last clause;
4346 ** CONSTANTLY now correctly returns a side-effect-free function in
4348 ** DECLARE is no longer treated as a special-operator; in
4349 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
4350 * incremented fasl file version number due to the change in the
4351 DEFSTRUCT-SLOT-DESCRIPTION structure.
4353 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
4354 * minor incompatible change: code processed by the "interpreter" or
4355 EVAL now has a compilation optimization policy of (DEBUG 2)
4356 (changed from (DEBUG 1)) to improve debuggability of interactive
4357 development, and to allow the use of the debug RETURN command in
4359 * an experimental implementation of the RETURN command for the
4360 debugger has been included. (thanks to Frederik Kuivinen)
4361 * fixed bug 62: constraints were not propagated into a loop.
4362 * fixed bug in embedded calls of SORT (reported and investigated by
4364 * fixed some bugs revealed by Paul Dietz' test suite:
4365 ** printing and reading of arrays with some dimensions having
4366 length 0 (thanks to Gerd Moellmann);
4367 ** BOA constructor with &AUX argument without a default value does
4368 not cause a type error;
4369 ** CONSTANTP now returns true for all self-evaluating objects.
4371 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
4372 * fixed bug 127: DEFSTRUCT now does not clobber old structure
4373 accessors that are related by inheritance, as specified in the
4374 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
4375 Valtteri Vuorikoski)
4376 * The compiler is now able to inline functions that were defined in
4377 a complex lexical environment (e.g. inside a MACROLET).
4378 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
4380 * Support for the upcoming FreeBSD-5.0 release has been included.
4381 (thanks to Dag-Erling Smorgrav)
4382 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
4383 effect when it is not in a toplevel context.
4384 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
4385 stand a better chance of being correct. (thanks to Gerd
4387 * fixed bug in COERCE, which now signals an error on coercing a
4388 rational to a bounded real type which excludes the expected
4390 * The compiler is now able to derive types more accurately from the
4391 COERCE and COMPILE functions.
4392 * fixed bug 223: functional binding is considered to be constant
4393 only for symbols in the CL package.
4394 * fixed bug 231: SETQ did not check the type of a variable being set
4395 (reported by Robert E. Brown)
4396 * A new optimization for MAKE-INSTANCE has been included, fixing
4397 various bugs (including relating to :ALLOCATION :CLASS slots and
4398 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
4400 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
4401 ** As required by ANSI, LOOP now disallows anonymous collection
4402 clauses such as COLLECT I in conjunction with aggregate boolean
4403 clauses such as THEREIS (= I 1);
4404 ** LOOP now signals an error when any variable is reused in the
4405 same loop (including the potentially useful construct analogous
4406 to WITH A = 1 WITH A = (1+ A);
4407 ** IT is only a special loop symbol within the first clause of a
4408 conditional loop clause;
4409 ** LOOP with a typed iteration variable over a hashtable now
4410 signals a type error iff it should.
4411 * fixed some other bugs revealed by Paul Dietz' test suite:
4412 ** FILE-STREAM now names the class previously known as FD-STREAM;
4413 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
4414 argument) no longer signals an error;
4415 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
4416 of the slot symbol, rather than using the current package
4417 ((:CONC-NAME "") continues to intern the slot's name in the
4419 * incremented fasl file version number, because of the incompatible
4420 change to the DEFSTRUCT-DESCRIPTION structure, and again because
4421 of the new implementation of DEFINE-COMPILER-MACRO.
4423 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
4424 * Support for building SBCL for MIPS platforms running in
4425 little-endian mode has now been checked in, and basic
4426 functionality on said platforms verified.
4427 * minor incompatible change: PCL now records the pathname of a file
4428 in which methods and the like are defined, rather than its
4430 * minor incompatible change: TRUENAME now considers the truename of
4431 a file naming a directory to be the pathname with :DIRECTORY
4432 component indicating that directory.
4433 * minor incompatible change: a NAMED clause in the extended form of
4434 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
4435 reason for the previous behaviour is unclear.
4436 * more systematization and improvement of CLOS and MOP conformance
4437 in PCL (thanks to Gerd Moellman and Pierre Mai):
4438 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
4440 ** DEFINE-METHOD-COMBINATION no longer signals an error for
4441 primary methods with no specializers;
4442 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
4444 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
4445 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
4446 FORWARD-REFERENCED-CLASSes; error reporting on
4447 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
4449 ** SXHASH on CLOS instances now uses a slot internal to the
4450 instance to return different numbers on distinct instances,
4451 while preserving the same return value through invocations of
4453 ** DEFMETHOD signals errors when methods with longer incongruent
4454 lambda lists are added to generic functions;
4455 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4456 CLASS, as specified in AMOP;
4457 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4458 on the order returned by the primary method for classes of
4459 class STANDARD-CLASS;
4460 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4461 * fixed some bugs shown by Paul Dietz' test suite:
4462 ** DOLIST puts its body in TAGBODY;
4463 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4465 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4466 value producing form;
4467 ** if more variables are given to PROGV than values, extra
4468 variables are bound and made to have no value;
4469 ** NSUBSTITUTE on list arguments gets the right answer with
4471 ** ELT signals an error of type TYPE-ERROR when the index argument
4472 is not a valid sequence index;
4473 ** LOOP signals (at macroexpansion time) an error of type
4474 PROGRAM-ERROR when duplicate variable names are found;
4475 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4476 ** FUNCALL of special-operators now cause an error of type
4478 ** PSETQ now works as required in the presence of side-effecting
4479 symbol-macro places;
4480 ** NCONC accepts any object as its last argument;
4481 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4483 ** loop-for-as-package does not require a package to be explicitely
4485 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4487 * fixed bug 166: compiler preserves "there is a way to go"
4488 invariant when deleting code.
4489 * fixed bug 172: macro lambda lists with required arguments after
4490 &REST arguments now cause an error to be signalled. (thanks to
4492 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4493 bug. (thanks to Matthew Danish)
4494 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4496 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4497 arguments are lexically rebound. (thanks to Gerd Moellmann and
4499 * fixed bug 194: error messages are now more informative when there
4500 is no primary method applicable in a call to a generic
4501 function. (thanks to Gerd Moellmann)
4502 * fixed bug in command line argument checking (thanks to Julian
4504 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4505 (thanks to Matthew Danish)
4506 * incremented fasl file version number, because of the
4507 SXHASH-related changes in the layout of CLOS data structures
4509 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4510 * minor incompatible change: The runtime (the Unix executable named
4511 "sbcl") is now much pickier about the .core files it will load.
4512 Essentially it now requires .core files to descend from the same
4513 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4514 as the runtime does. (The intent is to prevent the crashes which
4515 can occur, and which can even be reported as mysterious failures,
4516 when people patch the sources or change the build parameters
4517 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4518 sbcl and .core files.)
4519 * fixed bug: VALUES-LIST is no longer optimized away.
4520 * fixed bug 142: The FFI conversion of C string values to Lisp
4521 string values no longer conses excessively. (thanks to Nathan
4522 Froyd porting Raymond Toy's fix to CMU CL)
4523 * began to systematize and improve MOP conformance in PCL (thanks to
4524 Nathan Froyd, Gerd Moellman and Pierre Mai):
4525 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4527 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4528 ** FINALIZE-INHERITANCE is now called on class finalization;
4529 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4530 argument precedence order.
4531 * fixed bug 202: The compiler no longer fails on functions whose
4532 derived types contradict their declared type.
4533 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4534 so it can be non-toplevel.
4535 * The fasl file version number has changed (because of the new
4536 implementation of DEFMACRO).
4537 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4538 safe code, that any length requirement by their type-specifier
4539 argument is valid. The exceptions to this are described in bug
4541 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4542 functions now check the types of their inputs as required by ANSI.
4543 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4544 introduced symbol is DECLAREd to be SPECIAL.
4545 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4546 * fixed bug: :COUNT argument to sequence functions may be negative
4547 * fixed bug: body of DO-SYMBOLS may contain declarations
4548 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4549 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4550 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4551 symbol macro only once
4552 * fixed printing of call frame when argument list is unavailable
4553 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4554 * compiler no longer signals WARNING on unknown keyword
4557 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4558 * A beta-quality port to the mips architecture running Linux,
4559 based on the old CMUCL backend, has been made. It has been tested
4560 on a big-endian kernel, and works sufficiently well to be able to
4561 rebuild itself; it has not been tested in little-endian mode.
4562 * fixed an inconsistency between gencgc.c and purify.c which made
4563 dumping/loading .core files unreliable
4564 * fixed bug 120a: The compiler now deals correctly with IFs where
4565 the consequent is the same as the alternative, instead of
4566 misderiving the return type. (thanks to Alexey Dejneka)
4567 * fixed bug 113: Logical pathnames are now dumpable (the logical
4568 host is resolved at load-time, throwing an error if it is not
4570 * fixed bug 174: FORMAT's error message is slightly clearer when a
4571 non-printing character is used in a format directive.
4572 * fixed several bugs in compiler checking of type declarations, i.e.
4573 violations of the Python "declarations are assertions" principle
4574 (thanks to Alexey Dejneka)
4575 * fixed several bugs in PCL's error checking (thanks to Gerd
4577 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4579 * fixed bug in compilation of functions as first class values
4580 (thanks to Antonio Martinez-Shotton)
4581 * The compiler's handling TYPE-ERRORs which it can prove will
4582 inevitably happen at runtime has been cleaned up and corrected
4583 in several ways. (thanks to Alexey Dejneka)
4584 * improved argument type checking for various basic arithmetic
4585 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4586 lavished on them in the past that they can be compiled in many
4587 ways in different special cases
4588 * fixed bug 181: compiler checks validity of user supplied type
4590 * cleaned up code flushing in optimization: Function calls which
4591 should signal errors for safety purposes (e.g. which ANSI says
4592 should signal errors when their arguments are of incorrect type)
4593 are no longer optimized away.
4594 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4595 * incremented fasl file version number, because changes in the
4596 implementation of sequence functions like COERCE caused
4597 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4598 in old inline expansions) to become undefined. (Actually these
4599 changes were later undone, so we might very well be binary
4600 compatible with 0.7.7 after all, but leaving the version number
4601 incremented seemed like the simplest and most conservative
4604 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4605 * An alpha-quality port to the parisc architecture running Linux,
4606 based on the old CMUCL backend, has been made. This, even more so
4607 than the other backends, should be considered still a work in
4608 progress; known problems include that the Linux kernel in 64-bit
4609 mode does not propagate the correct sigcontext structure to
4610 userspace, and consequently SBCL on a parisc64 kernel will not
4612 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4613 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4614 suppressed.) Also now that the compiler is looking at declarations
4615 in the environment, it checks optimization declarations as well,
4616 and suppresses inlining when (> DEBUG SPEED).
4617 * More fixes have been made to treatment of floating point exception
4618 treatment and other Unix signals. In particular, floating point
4619 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4620 * The detection and handling of control stack exhaustion (infinite
4621 or very deeply nested recursion) has changed. Stack exhaustion
4622 detection is now done by write-protecting pages at the OS level
4623 and applies at all optimization settings; when found, a
4624 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4625 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4626 be caught using IGNORE-ERRORS.
4627 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4628 correctly when transforming recursive LABELS functions to LETs.
4629 (thanks to Alexey Dejneka)
4630 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4631 that are names of constants or global variables.
4632 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4633 alien routines with docstrings.
4634 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4635 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4637 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4638 (thanks to Eric Marsden)
4639 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4640 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4641 * Bug fix: The SPARC backend can now compile functions involving
4642 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4643 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4644 to a functions expecting a PATHNAME-DESIGNATOR.
4645 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4646 lambda lists. (thanks to Alexey Dejneka)
4647 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4648 functions so that EXPORTing the name of the class doesn't cause
4649 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4650 to Antonio Martinez for reporting this)
4651 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4652 constant-folded without failing an assertion. (thanks to Einar
4653 Floystad Dorum for reporting this)
4654 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4655 types are now dealt with more correctly by the compiler.
4656 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4657 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4658 behaviour analogous to RENAME-FILE. This puts its behaviour more
4659 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4661 * The fasl file version number has changed again. (because of the
4662 bug fix involving the names of PCL MAKE-INSTANCE functions)
4664 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4665 * bug fix: Floating point exceptions are treated much more
4666 consistently on the x86/Linux and PPC/Linux platforms.
4667 * Array initialization with :INITIAL-ELEMENT is now much faster for
4668 cases when the compiler cannot open code the array creation, but
4669 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4670 array accesses have also seen a speed increase.
4671 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4672 specified. (This was at the root of some bad interactions between
4673 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4675 * bug fix: Internal error arguments for undefined functions are now
4676 computed correctly on the PPC/Linux platform.
4677 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4678 Raymond Toy's patch for CMU CL)
4679 * Support for the Solaris 9 operating environment has been included
4680 (thanks to Daniel Merritt)
4681 * A very ugly but hopefully complete draft of the missing FFI chapter
4682 of the manual has been created by reformatting the corresponding
4683 CMU CL manual chapter into (currently very ugly and incoherent)
4684 DocBook and bringing it up to date for SBCL behavior. Thus, the
4685 manual is now essentially complete, at least by my extreme
4686 once-and-only-once standards, whereby it's acceptable to refer to
4687 the doc strings of SB-EXT functions as the primary documentation.
4688 * The fasl file version number has changed again, due to cleanup of
4689 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4690 is no longer a static symbol.)
4692 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4693 * SBCL now builds with OpenMCL (version 0.12) as the
4694 cross-compilation host; also, more progress has been made toward
4695 bootstrapping under CLISP.
4696 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4698 * bug 158 fixed: The compiler can now deal with integer loop
4699 increments different from 1; fixing this turned out also to fix
4701 * bug 169 fixed: no more bogus warnings about using lexical bindings
4702 despite the presence of perfectly good SPECIAL declarations (thanks
4703 to David Lichteblau)
4704 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4705 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4706 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4708 * bug 180 fixed: Method combination specifications no longer ignore
4709 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4710 * bug fix: Structure type predicate functions now check their argument
4711 count as they should.
4712 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4713 correctly. (thanks to Pierre Mai)
4714 * minor incompatible change: The --noprogrammer option is deprecated
4715 in favor of the new --disable-debugger option, which is very similar.
4716 (The major difference is that it takes effect at a slightly different
4717 time at startup, causing handling of errors in --sysinit and
4718 --userinit files will be affected differently.) The
4719 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4720 been added to allow this functionality to be controlled from ordinary
4721 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4722 maintainers, who might want to run non-interactive scripts to
4723 build SBCL cores which will later be used interactively.)
4724 * minor incompatible change: The LOAD function no longer, when given
4725 a wild pathname to load, loads all files matching that pathname.
4726 Instead, an error of type FILE-ERROR is signalled.
4728 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4729 * bug 147 fixed: The compiler preserves its block link/count
4730 invariants more correctly now so that it doesn't crash. (thanks
4732 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4734 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4735 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4736 no-value-for-this-character as NIL (as specified by ANSI).
4737 * HOST-NAMESTRING on physical pathnames now returns a string that is
4738 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4739 (thanks to Christophe Rhodes)
4740 * The Alpha port handles icache flushing more correctly. (thanks to
4742 * More progress has been made toward bootstrapping under CLISP. (thanks
4743 to Christophe Rhodes)
4744 * The fasl file format has changed again, because dynamic loading
4745 on OpenBSD (which has non-ELF object files) motivated some cleanups
4746 in the way that foreign symbols are transformed and passed around.
4747 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4748 is no longer treated as whitespace by the reader, but instead as
4749 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4750 |A
\7fB|, instead of A as it used to.
4752 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4753 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4754 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4755 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4756 this as of 0.7.1.45, but was left out of the previous news section
4757 (thanks to Dan Barlow)
4758 * SBCL now runs on the Solaris operating system on SPARC architectures
4759 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4760 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4761 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4762 * SPARC backend cleanups, allowing builds of cores optimized for V8
4763 and V9 SPARCS, and also emission of code targeted to a particular
4764 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4766 * SBCL is closer to bootstrapping under CLISP, thanks to various
4767 fixes by Christophe Rhodes.
4768 * The fasl file format has changed again, to allow the compiler's
4769 INFO database to support symbol macros.
4770 * The user manual (in doc/) is formatted into HTML more nicely.
4771 (thanks to coreythomas)
4772 * The system is smarter about SUBTYPEP relationships, especially
4773 those involving NOT types (including types such as ATOM which are
4774 represented internally using NOT types). Thus SUBTYPEP is less
4775 likely to return (VALUES NIL NIL) in general, and in particular
4776 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4778 * The fasl file format has changed again, because the internal
4779 representation of types now includes a new slot to support the new
4780 SUBTYPEP-of-NOT-types logic.
4781 * (not a change in the main branch of SBCL, but a related prototype
4782 which can hopefully be merged into the main branch of SBCL in the
4783 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4784 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4785 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4786 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4787 dispatch macro character combinations. (thanks to Alexey Dejneka)
4788 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4789 that superficially look like logical namestrings correctly.
4790 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4792 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4793 default supplied-p) for &optional and &key arguments. (thanks to
4796 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4797 * incompatible change: The compiler is now less aggressive about
4798 tail call optimization, doing it only when (> SPACE DEBUG) or
4799 (> SPEED DEBUG). (This is an incompatible change because there are
4800 programs which relied on the old CMU-CL-style behavior to optimize
4801 away their unbounded recursion which will now die of stack overflow.)
4802 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4803 for non-GENCGC systems has been increased to 20M (since that
4804 seems much closer to the likely performance optimum for modern
4805 systems than the old 4M value was)
4806 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4807 and *DEBUG-PRINT-LEVEL*
4808 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4809 of CMU CL's support for SPARC, and various endianness and other
4810 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4811 * new syntactic sugar for the Unix command line: --load foo.bar is now
4812 an alternate notation for --eval '(load "foo.bar")'.
4814 ** The system now detects stack overflow and handles it gracefully,
4815 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4816 optimization settings. (This is a good thing in general, and
4817 its introduction in this version should be particularly timely
4818 for anyone whose code fails because of suppression of tail
4820 ** The system now hunts for the C variable "environ" in a more
4821 devious way, to avoid segfaults when the C library version differs
4822 between compile time and run time. (thanks to Christophe Rhodes)
4823 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4824 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4825 ** The compiler no longer issues bogus style warnings for undefined
4826 classes in the same source file as the DEFCLASSes which defined
4827 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4829 ** fixes in CONDITION class precedence list for undefined function
4830 errors (thanks to Alexei Dejneka)
4831 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4832 correctly. (thanks to Dan Barlow)
4833 ** portability fixes aiming at bootstrapping under CLISP (thanks
4834 to Dave McDonald and Christophe Rhodes)
4835 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4836 ** fixes in type translation and and type inference (thanks to
4838 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4839 ** various fixes in the new ports (thanks to Dan Barlow)
4840 * several changes related to debugging:
4841 ** suppression of tail recursion, as noted above
4842 ** stack overflow detection, as noted above
4843 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4844 is now the default. (For some time encapsulation has been more
4845 reliable than the breakpoint-based :ENCAPSULATE NIL
4846 implementation, at least on X86 systems; and I just noticed that
4847 encapsulation also seems closer to the spirit of the ANSI
4850 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4852 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4853 up properly again. (There was a packaging bug in 0.7.0 which
4854 left their definitions in SB-SYS::LOAD-FOREIGN and
4855 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4856 vital for most things which interface to C-level interfaces,
4857 like extensions working with sockets or databases or
4858 Perl-compatible regexes or whatever, and the need to fix
4859 this bug is the main reason that 0.7.1 was released so
4861 ** DEFGENERIC is now choosier about the methods it redefines, so that
4862 reLOADing a previously-LOADed file containing DEFGENERICs does
4863 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4864 cycle now works as it should. (thanks to Alexey Dejneka)
4865 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4866 fixed by Christophe Rhodes. (He actually submitted this patch
4867 months ago, and I delayed until after 0.7.0.)
4868 ** Bug 111 (internal compiler confusion about runtime checks on
4869 FUNCTION types) was fixed by Alexey Dejneka.
4870 * Some internal cleanups (getting rid of variables which aren't
4871 needed now that the byte interpreter is gone) caused the fasl
4872 file format number to change again.
4874 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4875 * major incompatible change: The default fasl file extension, i.e. the
4876 default extension for files produced by COMPILE-FILE, has changed
4877 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4879 ** There are many changes in the implementation of the compiler.
4880 SBCL is now essentially a compiler-only implementation of ANSI
4881 Common Lisp. EVAL still "interprets" a few special cases, but
4882 almost all the interesting cases are handled by creating
4883 a LAMBDA expression, calling COMPILE on it, then calling
4884 FUNCALL on the result.
4885 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4886 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4887 Since the code is newer, there might still be some new bugs
4888 (though not as many as before Martin Atzmueller's fixes:-). But
4889 the new code is substantially simpler and clearer, and hopefully
4890 any remaining bugs will be simpler, less fundamental, and more
4891 fixable then the bugs in the old code.
4892 ** The revised compiler is still a little unsteady on its feet.
4894 *** The debugging information it produces (particularly the names
4895 of FUNCTION objects) is sometimes much less useful than what
4896 the old compiler produced.
4897 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4898 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4899 within a MACROLET) has been temporarily weakened.
4900 ** There are new compiler optimizations for various functions:
4901 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4902 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4903 *** the math functions TRUNCATE, FLOOR, and CEILING
4904 *** the function-of-all-trades COERCE
4905 Mostly these should be transparent, but there's one
4906 potentially-annoying problem (bug 117): when the compiler
4907 inline-expands a function and does type analysis on the result,
4908 it can create control paths which have type mismatches, and
4909 when it can't prove that those control paths aren't taken,
4910 it will issue WARNINGs about the type mismatches. This is
4911 a particular problem in practice for the new sequence functions.
4912 It's not clear how this should be fixed, and for now, a
4913 workaround is given in the entry for 117 in the BUGS file.
4914 ** (Because of the interaction between the two previous items --
4915 occasional inlining problems and new inline expansions -- some
4916 of the new sequence function optimizations won't really kick in
4917 completely until debugging information, and then inlining, are
4918 straightened out in some future version.)
4919 * minor incompatible changes:
4920 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4921 DIRECTORY no longer implicitly promotes NIL slots of its
4922 pathname argument to :WILD. In particular, when you ask for the
4923 contents of a directory (which you used to be able to do without
4924 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4925 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4926 ** changes in behavior that ANSI explicitly defines to be
4927 implementation dependent:
4928 *** The new compiler-only implementation still conforms with ANSI,
4929 but acts a little different than before. Besides the obvious
4930 changes in performance tradeoffs (that the cost per form passed
4931 to EVAL has gone up, and the cost per form executed by EVAL
4932 has gone down), the behavior of the system changes a little
4933 because there are no longer any interpreted function objects.
4934 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4935 e.g. doing COMPILE on the output of interactive DEFUN is
4937 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4939 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4940 has changed from (:CL) to NIL.
4941 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4942 e.g. #\Newline and #\Tab, don't have names specified in the
4943 ANSI Common Lisp standard, is now based on their ASCII symbolic
4944 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4945 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4946 are no longer used for output.
4947 ** changes in internal implementation constants:
4948 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4949 4 million. (If your application spends a lot of time GCing and
4950 you have a lot of RAM, you might want to experiment with
4951 increasing it even more.)
4952 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4953 However, almost all old code should still continue to work without
4954 immediate update, as SB-C-CALL is now a (deprecated) nickname
4956 ** Old operator names in the style DEF-FOO are now deprecated in
4957 favor of new corresponding names DEFINE-FOO, for consistency with
4958 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4959 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4960 internal symbols, but a few supported extensions like
4961 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4962 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4963 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4964 etc. as you get deeper into recursive calls to the debugger
4965 command loop, instead of the old "5]", "5]]", "5]]]"
4966 sequence. (I was motivated to do this when squabbles between
4967 ILISP and SBCL left me very deeply nested in the debugger. In the
4968 short term, this change will probably provoke more ILISP/SBCL
4969 squabbles, but hopefully it will be an improvement in the long run.)
4970 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4971 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4972 function, since declaiming return types involving aliens is
4973 (1) annoyingly messy to do by hand and (2) vital to efficient
4974 compilation of code which calls such functions.
4975 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4976 longer reexported by the SB-EXT package. They're solely useful
4977 for alien code, so it seems more logical that you should get
4978 them from the SB-ALIEN package, not in SB-EXT.
4979 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4980 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4981 features. Instead, the code that they used to control is always
4982 built into the system.
4983 * many other bug fixes
4984 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4985 advantage of the new EVAL-WHEN stuff and to clean them up in
4986 general, and they are now more ANSI-compliant in a number of
4987 ways. Martin Atzmueller is responsible for a lot of this.
4988 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4990 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4991 *** correct ERROR type for various file operations
4992 *** some fixes for Lisp streams
4993 *** DEFMETHOD syntax checking
4994 *** changing old weird representation of debug information as
4995 strings (which, among their other deficiencies, don't transform
4996 correctly when you rename packages, and don't change their
4997 print representation when you change things like *PACKAGE*
4998 and *PRINT-LENGTH*) to symbols and lists of symbols
4999 He also made several improvements and fixed several bugs in DESCRIBE.
5000 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
5002 *** misbehavior of WRITE-STRING/WRITE-LINE
5003 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
5004 and several other LOOP problems as well
5005 *** DIRECTORY when similar filenames are present
5006 *** DEFGENERIC with :METHOD options
5007 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
5008 *** bug in the optimization of ARRAY-ELEMENT-TYPE
5009 *** argument ordering in FIND with :TEST option
5010 *** mishandled package designator argument in APROPOS-LIST
5011 *** various problems in the backquote readmacro
5012 *** a bug in APROPOS
5013 *** probably some others that I'm not describing very well here,
5014 since the CVS log documents them by reference to sbcl-devel
5015 messages, and the SourceForge archives aren't working well.:-(
5016 ** Dan Barlow improved the Alpha port (and is making progress on the
5017 PPC port, for those of you who think different).
5018 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
5019 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
5020 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
5021 continues to work on the SPARC port (for those of you in a position
5022 to look down upon our little PC-compatible boxes from a great height).
5023 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
5024 and uses that copy, rather than the current dynamic value, when
5025 it's trying to decide whether to truncate output. Thus e.g.
5026 (let ((*print-lines* 50))
5027 (pprint-logical-block (stream nil)
5029 (let ((*print-lines* 8))
5030 (print (aref possiblybigthings i) stream)))))
5031 should now truncate the logical block only at 50 lines, instead of
5032 often truncating it at 8 lines, as it did before.
5033 * The doc/cmucl/ directory, containing old CMU CL documentation
5034 from the time of the fork, is no longer part of the base system.
5035 SourceForge has shut down its anonymous FTP service, and with it
5036 my original plan for distributing the old CMU CL documentation
5037 there. For now, if you need these files you can download an old
5038 SBCL source release and extract them from it.
5039 * The fasl file version number changed again, for dozens of reasons,
5040 some of which are apparent above.
5042 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
5043 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
5044 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
5045 patch, so that DISASSEMBLE output is much nicer.
5046 * The code in the SB-PROFILE package now seems reasonably stable.
5047 I still haven't decided what the final interface should look like
5048 (I'd like PROFILE to interact cleanly with TRACE, since both
5049 facilities use function encapsulation) but if you have a need
5050 for profiling now, you can probably use it successfully with
5051 the current CMU-CL-style interface.
5052 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
5053 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
5054 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
5055 link now returns the dangling link itself, and for similar
5056 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
5057 link itself. (In these cases the old code signalled an error and
5058 looped endlessly, respectively.) Thus, DIRECTORY now works even
5059 in the presence of dangling and cyclic symbolic links.
5060 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
5061 is now a supported extension again, since the consensus on
5062 sbcl-devel was that it can be useful for ordinary development
5063 work, not just for debugging SBCL itself.
5064 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
5065 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
5066 that currently-defined functions might be redefined later with
5067 different return types.
5068 * Hash tables can be printed readably, as inspired by CMU CL code
5069 of Eric Marsden and SBCL code of Martin Atzmueller.
5070 * better error handling in CLOS method combination, thanks to
5071 Martin Atzmueller porting Pierre Mai's CMU CL patches
5072 * more overflow fixes for >16Mbyte I/O buffers
5073 * A bug in READ has been fixed, so that now a single Ctrl-D
5074 character suffices to cause end-of-file on character streams.
5075 In particular, now you only need one Ctrl-D at the command
5076 line (not two) to exit SBCL.
5077 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
5079 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
5080 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
5081 does the right thing.
5082 * The implementation of some type tests, especially for CONDITION
5083 types, is now tidier and maybe faster, due to CMU CL code
5084 originally by Douglas Crosher, ported by Martin Atzmueller.
5085 * Some math functions have been fixed, and there are new
5086 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
5087 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
5088 * (There are also some new optimizers in contrib/*-extras.lisp. Those
5089 aren't built into sbcl-0.6.13, but are a sneak preview of what's
5090 likely to be built into sbcl-0.7.0.)
5091 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
5092 CL, ported to SBCL by Martin Atzmueller)
5093 * DESCRIBE now gives more information in some cases. (Pierre Mai's
5094 patch to CMU CL, ported to SBCL by Martin Atzmueller)
5095 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
5096 * There's a new slam.sh hack to shorten the edit/compile/debug
5097 cycle for low-level changes to SBCL itself, and a new
5098 :SB-AFTER-XC-CORE target feature to control the generation of
5099 the after-xc.core file needed by slam.sh.
5100 * minor incompatible change: The ENTRY-POINTS &KEY argument to
5101 COMPILE-FILE is no longer supported, so that now every function
5102 gets an entry point, so that block compilation looks a little
5103 more like the plain vanilla ANSI section 3.2.2.3 scheme.
5104 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
5105 returns the number of bytes consed since the system started,
5106 rather than the number consed since the first time the function
5107 was called. (The new definition parallels ANSI functions like
5108 CL:GET-INTERNAL-RUN-TIME.)
5109 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
5110 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
5111 supported. Now DIRECTORY always does the abstract Common-Lisp-y
5112 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
5113 * Fasl file version numbers are now independent of the target CPU,
5114 since historically most system changes which required version
5115 number changes have affected all CPUs equally. Similarly,
5116 the byte fasl file version is now equal to the ordinary
5119 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
5120 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
5121 is no longer recognized. I apologize for this, because it was
5122 listed in SB-EXT as a supported extension, but I found that
5123 its existing behavior was poorly specified, as well as incorrectly
5124 specified, and it looked like too much of a mess to straighten it
5125 out. I have enough on my hands trying to get ANSI stuff to work..
5126 * many patches ported from CMU CL by Martin Atzmueller, with
5127 half a dozen bug fixes in pretty-printing and the debugger, and
5128 half a dozen others elsewhere
5129 * fixed bug 13: Floating point infinities are now supported again.
5130 They might still be a little bit flaky, but thanks to bug reports
5131 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
5132 as flaky as they were.
5133 * The --noprogrammer command line option is now supported. (Its
5134 behavior is slightly different in detail from what the old man
5135 page claimed it would do, but it's still appropriate under the
5136 same circumstances that the man page talks about.)
5137 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
5138 are now supported, and enabled by default. Thus, the compiler can
5139 handle many floating point and complex operations much less
5140 inefficiently. (Thus e.g. you can implement a complex FFT
5142 * The compiler now detects type mismatches between DECLAIM FTYPE
5143 and DEFUN better, and implements CHECK-TYPE more correctly, and
5144 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
5145 thanks to patches from Martin Atzmueller.
5146 * various fixes to make the cross-compiler more portable to
5147 ANSI-conforming-but-different cross-compilation hosts (notably
5148 Lispworks for Windows, following bug reports from Arthur Lemmens)
5149 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
5150 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
5151 fixed thanks to Pierre Mai's CMU CL patches.
5152 * fixes to keep the system from overflowing internal counters when
5153 it tries to use i/o buffers larger than 16M bytes
5154 * fixed bug 45a: Various internal functions required to support
5155 complex special functions have been merged from CMU CL sources.
5156 (When I was first setting up SBCL, I misunderstood a compile-time
5157 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
5158 * improved support for type intersection and union, fixing bug 12
5159 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
5160 more obscure bugs as well
5161 * some steps toward byte-compiling non-performance-critical
5162 parts of the system, courtesy of patches from Martin Atzmueller
5163 * Christophe Rhodes has made some debian packages of sbcl at
5164 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
5165 From his sbcl-devel e-mail of 2001-04-08 they're not completely
5166 stable, but are nonetheless usable. When he's ready, I'd be happy
5167 to add them to the SourceForge "File Releases" section. (And if
5168 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
5169 * new fasl file format version number (because of changes in
5170 internal representation of (OR ..) types to accommodate the new
5171 support for (AND ..) types, among other things)
5173 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
5174 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
5176 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
5178 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
5179 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
5180 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
5181 * DESCRIBE now works on structure objects again.
5182 * Most function call argument type mismatches are now handled as
5183 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
5184 know whether the function will be redefined before the call is
5185 executed. (The compiler could flag local calls with full WARNINGs,
5186 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
5187 it doesn't keep track of enough information to know whether calls
5188 are local in this sense.)
5189 * Compiler output is now more verbose, with messages truncated
5190 later than before. (There should be some supported way for users
5191 to override the default verbosity, but I haven't decided how to
5192 provide it yet, so this behavior is still controlled by the internal
5193 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
5194 src/compiler/ir1util.lisp.)
5195 * Fasl file format version numbers have increased again, because
5196 support for the Gray streams extension changes the layout of the
5197 system's STREAM objects.
5198 * The Gray subclassable streams extension now works, thanks to a
5199 patch from Martin Atzmueller.
5200 * The full LOAD-FOREIGN extension (not just the primitive
5201 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
5202 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
5203 but like most other programs, it defaults to copying the Unix
5204 environment from the original process instead of starting the
5205 new process in an empty environment.
5206 * Extensions which manipulate the Unix environment now support
5207 an :ENVIRONMENT keyword option which doesn't smash case or
5208 do other bad things. The CMU-CL-style :ENV option is retained
5209 for porting convenience.
5210 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
5211 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
5213 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
5215 * A patch from Martin Atzmueller seems to have solved the SIGINT
5216 problem, and as far as we know, signal-handling now works cleanly.
5217 (If you find any new bugs, please report them!)
5218 * The system no longer defaults Lisp source file names to types
5219 ".l", ".cl", or ".lsp", but only to ".lisp".
5220 * The compiler no longer uses special default file extensions for
5221 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
5222 seems to expect a single default extension for all compiled code,
5223 and there's no compelling reason to try to stretch the standard
5224 to allow two different extensions.) Instead, byte-compiled files
5225 default to the same extension as native-compiled files.
5226 * Fasl file format version numbers have increased again, because
5227 a rearrangement of internal implementation packages made some
5228 dumped symbols in old fasl files unreadable in new cores.
5229 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
5230 many fewer weird special cases.
5231 * Bug #17 (differing COMPILE-FILE behavior between logical and
5232 physical pathnames) has been fixed, and some related misbehavior too,
5233 thanks to a patch from Martin Atzmueller.
5234 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
5235 by Tim Moore, ported to SBCL by Martin Atzmueller.
5236 * Martin Atzmueller fixed several filesystem-related problems,
5237 including bug #36, in part by porting CMU CL patches, which were
5238 written in part by Paul Werkowski.
5239 * More compiler warnings in src/runtime/ are gone, thanks to
5240 more patches from Martin Atzmueller.
5241 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
5244 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
5246 * DESCRIBE now works on CONDITION objects.
5247 * The debugger now handles errors which arise when trying to print
5248 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
5250 * The build system now uses an additional file, customize-target-features.lisp,
5251 to allow local modifications to the target *FEATURES* list. (The point of
5252 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
5253 debugging features enabled, without having to worry about propagating it
5254 into everyone's system when I do a "cvs update".) When no
5255 customize-target-features.lisp file exists, the target *FEATURES* list
5256 should be constructed the same way as before.
5257 * fixed bugs in DEFCONSTANT ANSI-compatibility:
5258 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
5259 warn about behavior which is undefined under the ANSI spec. Note: This
5260 is specified by ANSI, but it's not very popular with programmers.
5261 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
5262 macro in the SBCL sources for an example of a workaround which you
5263 might use to make portable ANSI-standard code which does what you want.
5264 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
5265 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
5266 when it's used as a non-toplevel form. (This is required in order
5267 to implement the DEFCONSTANT-EQX macro.)
5268 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
5269 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
5270 funny things, due to bugs in the implementation of EVAL-WHEN
5271 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
5272 non-toplevel DEFCONSTANTs are uncommon.)
5273 * The core file version number and fasl file version number have been
5274 incremented, because the old noncompliant DEFCONSTANT behavior involved
5275 calling functions which no longer exist, and because I also took the
5276 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
5277 * fixed bug 1 (error handling before read-eval-print loop starts), and
5278 redid debugger restarts and related debugger commands somewhat while
5280 ** The QUIT debugger command is gone, since it did something
5281 rather different than the SB-EXT:QUIT command, and since it never
5282 worked properly outside the main toplevel read/eval/print loop.
5283 Invoking the new TOPLEVEL restart provides the same functionality.
5284 ** The GO debugger command is also gone, since you can just invoke
5285 the CONTINUE restart directly instead.
5286 ** The TOP debugger command is also gone, since it's redundant with the
5287 FRAME 0 command, and since it interfered with abbreviations for the
5289 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
5291 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
5292 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
5293 some porting work by Martin Atzmueller)
5294 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
5295 with a boatload of patches which he ported to SBCL. Now that those
5297 ** The system tries to make sure that its low-priority messages
5298 are prefixed by semicolons, to help people who like to use
5299 syntax highlighting in their ILISP buffer. (This patch
5300 was originally due to Raymond Toy.)
5301 ** The system now optimizes INTEGER-LENGTH better, thanks to more
5302 patches originally written by Raymond Toy.
5303 ** The compiler understands coercion between single-value and
5304 multiple-VALUES type expressions better, getting rid of some very
5305 weird behavior, thanks to patches originally by Robert MacLachlan
5306 and Douglas Crosher.
5307 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
5308 lambda lists, thanks to a patch originally by Pierre Mai.
5309 ** The system no longer bogusly warns about "abbreviated type
5311 ** The compiler gets less confused by inlining and RETURN-FROM,
5312 thanks to some patches originally by Tim Moore.
5313 ** The system no longer hangs when dumping circular lists to fasl
5314 files, thanks to a patch originally from Douglas Crosher.
5315 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
5316 undefined function error.
5317 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
5318 in structure slot initforms) for now, documented workaround instead:-|
5319 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
5320 * fixed bug 5: added stubs for various Gray stream functions called
5321 in the not-a-CL:STREAM case, so that even when Gray streams aren't
5322 installed, at least appropriate type errors are generated
5323 * fixed bug 8: better reporting of various PROGRAM-ERRORs
5324 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
5325 consistently in DEFMETHOD forms.
5326 * removed bug 21 from BUGS, since Martin Atzmueller points out that
5327 it doesn't seem to affect SBCL after all
5328 * The C runtime system now builds with better optimization and many
5329 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
5331 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
5333 * The system is now under CVS at SourceForge (instead of the
5334 CVS repository on my home machine).
5335 * The new signal handling code has been tweaked to treat register
5336 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
5337 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
5338 downstream, e.g. in debug-int.lisp, has implicit dependencies
5339 on the unsignedness of integer representation of machine words,
5340 and that caused the system to bomb out with infinite regress
5341 when trying to recover from type errors involving signed values,
5342 e.g. (BUTLAST '(1 2 3) -1).)
5343 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
5344 (This was one of the bugs Peter Van Eynde reported back in July.)
5345 * The system now uses code inspired by Colin Walters' O(N)
5346 implementation of MAP (from the cmucl-imp@cons.org mailing
5347 list, 2 September 2000) when it can't use a DEFTRANSFORM to
5348 inline the MAP operation, and there is more than one
5349 sequence argument to the MAP call (so that it can't just
5350 do ETYPECASE once and for all based on the type of the
5351 single sequence argument). (The old non-inline implementation
5352 of the general M-argument sequence-of-length-N case required
5353 O(M*N*N) time when any of the sequence arguments were LISTs.)
5354 * The QUIT :UNIX-CODE keyword argument has been renamed to
5355 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
5356 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
5358 * Raymond Wiker's patches to port dynamic loading from Linux to
5359 FreeBSD have been added.
5360 * The BUGS file is now more nearly up to date, thanks in large part
5361 to Martin Atzmueller's review of it.
5362 * The debugger now flushes standard output streams before it begins
5363 its output ("debugger invoked" and so forth).
5364 * The core version number and fasl file version number have both
5365 been incremented, because of incompatible changes in the layout
5367 * FINISH-OUTPUT is now called more consistently on QUIT. (It
5368 used to not be called for a saved Lisp image.)
5369 * Martin Atzmueller's version of a patch to fix a compiler crash,
5370 as posted on sbcl-devel 13 September 2000, has been installed.
5371 * Instead of installing Martin Atzmueller's patch for the
5372 compiler transform for SUBSEQ, I deleted the compiler transform,
5373 and transforms for some similar consing operations.
5374 * A bug in signal handling which kept TRACE from working on OpenBSD
5376 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
5377 away by constant folding
5378 * The system now defines its address space constants in one place
5379 (in the Lisp sources), and propagates them automatically elsewhere
5380 (through GENESIS and the sbcl.h file). Therefore, patching the
5381 address map is less unnecessarily tedious and error-prone. The
5382 Lisp names of address space constants have also been systematized.
5383 * CVS tags like dollar-Header-dollar have been removed from
5384 the sources, because they have never saved me trouble and
5385 they've been source of trouble working with patches and other
5386 diff-related operations.
5387 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
5388 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
5390 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
5392 * The system has been ported to OpenBSD.
5393 * The system now compiles with a simple "sh make.sh" on the systems
5394 that it's supported on. I.e., now you no longer need to tweak
5395 text in the target-features.lisp-expr and symlinks in src/runtime/
5396 by hand, the make.sh takes care of it for you.
5397 * The system is no longer so grossly inefficient when compiling code
5398 involving vectors implemented as general (not simple) vectors (VECTOR T),
5399 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
5400 which dares to use the various sequence functions on non-simple
5401 vectors, takes less of a performance hit.
5402 * There is now a primitive type predicate VECTOR-T-P
5403 to test for the (VECTOR T) type, so that e.g.
5404 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
5405 can now be compiled with some semblance of efficiency. (The old code
5406 turned the type declaration into a full call to %TYPEP at runtime!)
5407 * AREF on (VECTOR T) is still not fast, since it's still compiled
5408 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
5409 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
5410 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
5411 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
5412 without making full calls to SUBTYPEP at runtime.
5413 (Some analogous efficiency issues for non-simple vectors specialized to
5414 element types other than T, or for non-simple multidimensional arrays,
5415 have not been addressed. They could almost certainly be handled the
5416 same way if anyone is motivated to do so.)
5417 * The changes in array handling break binary compatibility, so
5418 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
5419 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
5420 instead of (VALUES T T).
5421 * By following the instructions that Dan Barlow posted to sbcl-devel
5422 on 2 July 2000, I was able to enable primitive dynamic object
5423 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
5424 functionality is not implemented (since it calls ld to resolve
5425 library references automatically, requiring RUN-PROGRAM for its
5426 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
5427 try to resolve library references) is now supported.
5428 * The system now flushes the standard output streams when it terminates,
5429 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
5430 them at several other probably-convenient times, e.g. in each pass of
5431 the toplevel read-eval-print loop, and after evaluating a form given
5432 as an "--eval" command-line option. (These changes were motivated by a
5433 discussion of stream flushing issues on cmucl-imp in August 2000.)
5434 * The source transform for TYPEP of array types no longer assumes
5435 that an array whose element type is a not-yet-defined type
5436 is implemented as an array of T, but instead punts, so that the
5437 type will be interpreted at runtime.
5438 * There is now some support for cross-compiling in make.sh: each of
5439 the phases of make.sh has its own script. (This should be transparent
5440 to people doing ordinary, non-cross-compile builds.)
5441 * Since my laptop doesn't have hundreds of megabytes of memory like
5442 my desktop machine, I became more motivated to do some items on
5443 my to-do list in order to reduce the size of the system a little:
5444 ** Arrange for various needed-only-at-cold-init things to be
5445 uninterned after cold init. To support this, those things have
5446 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
5447 symbols with such names are now uninterned after cold init).
5448 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
5449 fasl files for cold load.
5450 ** Remove the old compiler structure pooling code (which used to
5451 be conditional on the target feature :SB-ALLOC) completely.
5452 ** Redo the representation of some data in cold init to be more compact.
5453 (I also looked into supporting byte compiled code at bootstrap time,
5454 which would probably reduce the size of the system a lot, but that
5455 looked too complicated, so I punted for now.)
5456 * The maximum signal nesting depth in the src/runtime/ support code has
5457 been reduced from 4096 to 256. (I don't know any reason for the very
5458 large old value. If the new smaller value turns out to break something,
5459 I'll probably just bump it back up.)
5460 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5462 * Many, many bugs reported by Peter Van Eynde have been added to
5463 the BUGS list; some have even been fixed.
5464 * While enabling dynamic object file loading, I tried to make the
5465 code easier to understand, renaming various functions and variables
5466 with less ambiguous names, and changing some function calling
5467 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5468 * While trying to figure out how to do the OpenBSD port, I tried to
5469 clean up some of the code in src/runtime/. In particular, I dropped
5470 support for non-POSIX signal handling, added various comments,
5471 tweaked the code to reduce the number of compilation warnings, and
5472 renamed some files to increase consistency.
5473 * To support the new automatic configuration functionality in make.sh,
5474 the source file target-features.lisp-expr has been replaced with the
5475 source file base-target-features.lisp-expr and the machine-generated
5476 file local-target-features.lisp-expr.
5477 * fixed a stupid quoting error in make.sh so that using CMU CL
5478 "lisp -batch" as cross-compilation host works again
5480 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5482 * DESCRIBE no longer tries to call itself recursively to describe
5483 bound/fbound values, so that it no longer fails on symbols which are
5484 bound to themselves (like keywords, T, and NIL).
5485 * DESCRIBE now works on generic functions.
5486 * The printer now prints less-screwed-up representations of closures
5487 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5488 * A private symbol is used instead of the :EMPTY keyword previously
5489 used to mark empty slots in hash tables. Thus
5490 (DEFVAR *HT* (MAKE-HASH-TABLE))
5491 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5492 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5493 now does what ANSI says that it should. (You can still get
5494 similar noncompliant behavior if bang on the hash table
5495 implementation with all the symbols you get back from
5496 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5497 This breaks binary compatibility, since tests for equality to
5498 :EMPTY are wired into things like the macroexpansion of
5499 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5501 * There's now a minimal placeholder implementation for CL:STEP,
5502 as required by ANSI.
5503 * An obscure bug in the interaction of the normal compiler, the byte
5504 compiler, inlining, and structure predicates has been patched
5505 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5506 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5508 * Missing ordinary arguments in a macro call are now detected even
5509 when the macro lambda list contains &KEY or &REST.
5510 * The debugger no longer complains about encountering the top of the
5511 stack when you type "FRAME 0" to explicitly instruct it to go to
5512 the top of the stack. And it now prints the frame you request even
5513 if it's the current frame (instead of saying "You are here.").
5514 * As specified by ANSI, the system now always prints keywords
5515 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5517 * The default initial SIZE of HASH-TABLEs is now smaller.
5518 * Type information from CLOS class dispatch is now propagated
5519 into DEFMETHOD bodies, so that e.g.
5520 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5522 is now basically equivalent to
5523 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5524 (DECLARE (TYPE SINGLE-FLOAT X))
5526 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5527 operation, without having to do run-time type dispatch.
5528 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5529 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5530 * Since I don't seem to be making big file reorganizations very often
5531 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5532 is overflowing my ability to conveniently back them up), I've finally
5533 checked the system into CVS. (The CVS repository is on my home system,
5534 not at SourceForge -- putting it on SourceForge might come later.)
5535 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5536 high-level GC-NOTIFY-FOO functions send their output. (There's
5537 still very little control of where low-level verbose GC functions
5538 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5539 less than it used to -- the GC-NOTIFY-FOO functions are now under
5540 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5541 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5542 in only one place in the source code, and propagates it automatically
5543 everywhere that it's needed. Thus e.g. when I bump the version from
5544 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5545 * The C source files now include boilerplate legalese and documentation
5546 at the head of each file (just as the Lisp source files already did).
5547 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5548 to his page will be replaced with a link to his new CLiki service.
5550 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5552 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5553 * The build process now looks for GNU make under the default name "gmake",
5554 instead of "make" as it used to. If GNU make is not available as "gmake"
5555 on your system, you can change this default behavior by setting the
5556 GNUMAKE environment variable.
5557 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5558 can build without error under CMU CL.
5560 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5562 * There is now a partial SBCL user manual (with some new text and some
5563 text cribbed from the CMU CL manual).
5564 * The beginnings of a profiler have been added (starting with the
5565 CMU CL profiler and simplifying and cleaning up). Eventually the
5566 main interface should be through the TRACE macro, but for now,
5567 it's still accessed through vaguely CMU-CL-style functions and macros
5568 exported from the package SB-PROFILE.
5569 * Some problems left over from porting CMU CL to the new
5570 cross-compilation bootstrap process have been cleaned up:
5571 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5572 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5573 part when getting rid of the compiler *BACKEND* stuff.)
5574 ** The value of *NULL-TYPE* was screwed up, because it was
5575 being initialized before the type system knew the final
5576 definition of the 'NULL type. This screwed up several key
5577 optimizations in the compiler, causing inefficiency in all sorts
5578 of places. (I found it because I wanted to understand why
5579 GET-INTERNAL-RUN-TIME was consing.)
5580 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5581 PROCLAIM FTYPE information. Unfortunately this broke binary
5582 compatibility again, since now the forms output by DEFGENERIC
5583 to refer to functions which didn't exist in 0.6.3.
5584 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5585 can use the new (as of 0.6.3) transform for SOME into MAP into
5587 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5588 values to (INTEGER 0 1000000), so that the time code will no longer
5589 occasionally get blown up by Linux returning 1000000 microseconds
5590 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5591 its output conform to the ANSI spec. (Alas, this makes its output
5592 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5593 * A full call to MAP NIL with a single sequence argument no longer conses.
5594 * fixes to problems pointed out by Martin Atzmueller:
5595 * The manual page no longer talks about multiprocessing as though
5596 it were currently supported.
5597 * The ILISP support patches have been removed from the distribution,
5598 because as of version 5.10.1, ILISP now supports SBCL without us
5599 having to maintain patches.
5600 * added a modified version of Raymond Toy's recent CMU CL patch for
5601 EQUALP comparison of HASH-TABLE
5603 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5605 * The system still can't cross-compile itself with
5606 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5607 entails), but at least it can compile more of itself that way
5608 than it used to be able to, and various buglets which were uncovered
5609 by trying to cross-compile itself that way have now been fixed.
5610 * This release breaks binary compatibility again. This time
5611 at least I've incremented the FASL file format version to 2, so that the
5612 problem can be detected reliably instead of just causing weird errors.
5613 * various new style warnings:
5614 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5615 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5616 ** using the lexical binding of a variable named in the *FOO* style
5617 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5618 as specified by ANSI.
5619 * *RANDOM-STATE* is no longer automatically initialized from
5620 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5621 default behavior of the system is to repeat its behavior every time
5622 it's run. If you'd like to change this behavior, you can always
5623 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5624 old convention there was no comparably easy way to get the system to
5625 repeat its behavior every time it was run.
5626 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5627 FTYPE declarations has been removed, in favor of their ANSI
5628 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5629 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5630 the types of their sequence arguments can be determined at compile time.
5631 This is done through a new open code expansion for MAP which eliminates
5632 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5633 argument types can be determined at compile time.
5634 * The optimizer now transforms COERCE into an identity operation when it
5635 can prove that the coerced object is already of the correct type. (This
5636 can be a win for machine generated code, including the output of other
5637 optimization transforms, such as the MAP transform above.)
5638 * Credit information has been moved from source file headers into CREDITS.
5639 * Source file headers have been made more standard.
5640 * The CASE macro now compiles without complaining even when it has
5643 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5645 * (Note that the way that the PCL macroexpansions were rewritten
5646 to accommodate the change in DEFGENERIC below breaks binary
5647 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5648 not run under sbcl-0.6.2. Once we get out of alpha releases,
5649 i.e. hit release 1.0.0, we'll probably try to maintain binary
5650 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5651 and sbcl-1.4.4. Until then, however, it might be fairly common
5652 for maintenance releases to break binary compatibility.)
5653 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5655 * The reporting of unhandled signals has been changed to print some
5656 explanatory text as well as the report form. (Previously only
5657 the report form was printed.)
5658 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5659 it defines, so that the compiler no longer issues undefined function
5660 warnings for compiled-but-not-yet-loaded generic functions.
5661 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5662 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5663 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5664 section of the ANSI spec are supported.
5665 * The "" nickname for the "KEYWORD" package has been removed.
5666 The reader still handles symbol tokens which begin with a package marker
5667 as keywords, but it doesn't expose its mechanism for doing so in the
5668 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5669 * The system now issues STYLE-WARNINGs for contradictory TYPE
5670 proclamations. (Warnings for contradictory FTYPE proclamations would
5671 be nice too, but those can't be done usefully unless the type system
5672 is made smarter about FUNCTION types.)
5673 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5674 systematized, so that "*target-*.lisp is supposed to exist only on the
5675 target and imply that there's a related file which exists on the
5676 host, and *host-*.lisp is supposed to exist only on the host and imply
5677 that there's a related file which exists on the target. This involves a
5678 lot of renaming. Hopefully the acute confusion caused by the renaming
5679 will be justified by the reduction in chronic confusion..
5680 ** runtime-type.lisp -> early-target-type.lisp
5681 ** target-type.lisp -> late-target-type.lisp
5682 ** early-host-format.lisp -> early-format.lisp
5683 ** late-host-format.lisp -> late-format.lisp
5684 ** host-error.lisp -> misc-error.lisp
5685 ** early-error.lisp -> early-target-error.lisp
5686 ** late-error.lisp -> late-target-error.lisp
5687 ** host-defboot.lisp -> early-defboot.lisp
5688 ** code/misc.lisp -> code/target-misc.lisp
5689 ** code/host-misc.lisp -> code/misc.lisp
5690 ** code/numbers.lisp -> code/target-numbers.lisp
5691 ** code/early-numbers.lisp -> numbers.lisp
5692 ** early-host-type.lisp -> early-type.lisp
5693 ** late-host-type.lisp -> late-type.lisp
5694 ** host-typep.lisp -> typep.lisp
5695 ** load.lisp -> target-load.lisp
5696 ** host-load.lisp -> load.lisp
5697 ** host-disassem.lisp -> disassem.lisp
5698 ** host-insts.lisp -> insts.lisp
5699 ** byte-comp.lisp -> target-byte-comp.lisp
5700 ** host-byte-comp.lisp -> byte-comp.lisp
5701 ** host-signal.lisp -> signal.lisp
5702 ** host-defstruct.lisp -> defstruct.lisp
5703 ** late-target-type.lisp -> deftypes-for-target.lisp
5704 Furthermore, several other previously target-only files foo.lisp (e.g.
5705 hash-table.lisp and random.lisp) have been split into a target-and-host
5706 foo.lisp file and a target-only target-foo.lisp file, with their key type
5707 definitions in the target-and-host part, so that the cross-compiler will
5708 know more about target types.
5709 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5710 gone away. In their place are various *BACKEND-FOO* variables
5711 corresponding to the slots of the old structure.
5712 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5713 into the target SBCL has been fixed.
5714 * The chill.lisp system for loading cold code into a running SBCL
5716 * Support for the CMU CL "scavenger hook" extension has been removed.
5717 (It was undocumented and unused in the CMU CL sources that SBCL was
5718 derived from, and stale in sbcl-0.6.1.)
5719 * Various errors in the cross-compiler type system were detected
5720 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5721 (enabling various consistency checks). Many of them were fixed,
5722 but some hard problems remain, so the compiler is back to
5723 running without *TYPE-SYSTEM-INITIALIZED* for now.
5724 * As part of the cross-compiler type system cleanup, I implemented
5725 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5726 * I have started adding UNCROSS calls throughout the type system
5727 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5728 on cross-compiler input files will be able to go away, and various
5730 * CONSTANTP now returns true for quoted forms (as explicitly required
5733 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5735 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5736 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5737 (MAKE-LIST -1). In the longer term, it ought to become true
5738 that declarations are assertions even at SAFETY 1. For now, it's not
5739 quite true even at SAFETY 3, but it's at least more nearly true..
5740 (Note that this change seems to increases the size of the system by
5741 O(5%) and to decrease the speed of the compiler by 20% or more.)
5742 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5743 for the problem of printing dozens of lines of distracting information
5744 about low-level system machinery as part of the top stack frame
5745 on entry to the debugger when an undefined function was called.
5746 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5747 is not reset to COMMON-LISP-USER.
5748 * Compilation of stuff related to dyncount.lisp has been made conditional
5749 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5750 smaller. The various dyncount-related symbols have been moved into
5751 a new "SB-DYNCOUNT" package.
5752 * tty-inspect.lisp has been renamed to inspect.lisp.
5753 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5754 feature has gone away. (When we eventually port to other flavors of
5755 libc and/or Unix, we'll try to make the differences between flavors
5756 invisible at the user level.)
5757 * Various other *FEATURES* tags, and/or their associated conditionals,
5758 have been removed if obsolescent, or given better documentation, or
5759 sometimes given more-mnemonic names.
5761 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5763 * tidied up "make.sh" script
5764 * tidied up system directory structure
5765 * better "clean.sh" behavior
5766 * added doc/FOR-CMUCL-DEVELOPERS
5767 * many many small tweaks to output format, e.g. removing possibly-confusing
5768 trailing #\. character in DESCRIBE-INSTANCE
5769 * (EQUALP #\A 'A) no longer signals an error.
5770 * new hashing code, including EQUALP hashing
5771 * tidied up Lisp initialization and toplevel
5772 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5773 * command line argument processing
5774 * added POSIX-GETENV function to deal with Unix-ish environment variables
5775 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5776 terminating SBCL on EOF
5777 * non-verbose GC by default
5778 * There is no more "sbcl" shell script; the sbcl file is now the C
5779 runtime executable (just like CMU CL).
5780 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5782 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5783 symbol and package information as Lisp native symbol and package objects
5784 instead of strings naming symbols and strings naming packages. This way,
5785 whenever packages are renamed (as in warm init), debug information is
5786 transformed along with everything else.
5787 * tweaked the optimization policy declarations which control the building
5788 of SBCL itself. Now, among other things, the system no longer saves
5789 source location debugging information. (This helps two problems at once
5790 by reducing SBCL size and by keeping SBCL from trying to look for its
5791 sources -- which may not exist -- when reporting errors.)
5792 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5793 debugging and testing purposes
5794 * cleaned up printing, making the printer call PRINT-OBJECT for
5795 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5796 methods, giving nearly-ANSI behavior
5797 * converted almost all special variables to use *FOO* naming convention
5798 * deleted PARSE-TIME functionality, since it can be done portably
5799 * moved some files out of cold init into warm init
5800 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5802 * regularized formatting of source files
5803 * added an install.sh script
5804 * fixed ridiculous memory usage of cross-compiler by making
5805 compiler/alloc.lisp not try to do pooling unless it can hook
5806 itself into the GC of the cross-compilation host. Now the system
5807 builds nicely on my old laptop.
5808 * added :SB-ALLOC in target-features.lisp-expr
5809 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5810 was not implemented)
5811 * re-did condition handling and note reporting in the compiler. Notes
5812 are no longer handled by signalling conditions. Style warnings
5813 and warnings are handled more correctly and reported in such a way
5814 that it's easy to find one or the other in your output (so that you
5815 can e.g. figure out which of many problems caused COMPILE-FILE to
5817 * changed the severity of several compiler warnings from full WARNING
5818 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5819 compiler note reporting so that it doesn't use the condition system
5820 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5821 COMPILE-FILE command)
5822 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5823 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5824 no longer supported, since their implementation was deeply intertwingled
5825 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5826 * removed bogus "support" for compiler macros named (SETF FOO), and
5827 removed the compiler macro for SETF INFO (but only after making a fool
5828 of myself on the cmucl-imp mailing list by posting a bogus patch for
5829 DEFINE-COMPILER-MACRO..)
5830 * Compiled files containing forms which have side effects on the Lisp
5831 reader (such as DEFPACKAGE forms) are now handled more correctly.
5832 (Compiler queuing of top level lambdas has been suppressed by setting
5833 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5834 * deleted various currently-unused source files, e.g. gengc.lisp. They
5835 may be added back at some point e.g. when porting to other architectures,
5836 but until they are it's distracting to distribute them and to try to
5838 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5839 there were so many of them they're just distractions, and UNCROSS is
5840 known to be able to handle the current sources
5841 * moved PROFILE functionality into TRACE, so that it will be clear
5842 how the wrapping and unwrapping of functions when you profile them
5843 interacts with the wrapping and unwrapping of functions when you
5844 trace them. (Actually, the functionality isn't there yet, but at least
5845 the interface specification is there. Hopefully, the functionality will
5846 arrive with some future maintenance release.)
5847 * removed host-oops.lisp
5848 * changed signature of QUIT function to allow UNIX-CODE argument
5849 * fixed READ-SEQUENCE bug
5850 * tweaked verbose GC output so that it looks more like the progress
5851 output that ANSI specifies for functions like LOAD
5852 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5853 * added <http://sbcl.sourceforge.com> to the banner information printed by